http://forum.xda-developers.com/showthread.php?t=2789485
Maybe this can/will happen to us? Or is it Sprint phone's hardware makes it not available? Kinda confused as to how they got that thru an OTA, I thought it had to do with hardware and not software.... gave me some hope maybe we will get it someday! lol
FYI: VoLTE= being on a call and being able to use LTE data
Joe0113 said:
http://forum.xda-developers.com/showthread.php?t=2789485
Maybe this can/will happen to us? Or is it Sprint phone's hardware makes it not available? Kinda confused as to how they got that thru an OTA, I thought it had to do with hardware and not software.... gave me some hope maybe we will get it someday! lol
FYI: VoLTE= being on a call and being able to use LTE data
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Click to collapse
It has nothing to do with hardware.
Did WiFi calling require new hardware? :silly:
It's all software based.
So short answer, yes we COULD do it/have it, but SPRINT has to do it and support it.
FWIW the WiFi calling at the moment is using a third party provider/service sprint pays, which I find funny. The future is VoIP, you'd think the providers have they own crap together by now.
It has to do with Chip Processor in our phone :/. Sprint can't do anything about it
The towers need the hardware/software to handle VoLTE. Our phones are all set for it, there's no special hardware. It just sends voice over LTE. The towers are on CSFB (why we lose data for calls and etc), and eventually will be made VoLTE-ready. When enough towers have it, within a year and a half or so I think, they'll push an OTA to enable it.
Sent from my SM-G900P using Tapatalk
dpwhitty11 said:
The towers need the hardware/software to handle VoLTE. Our phones are all set for it, there's no special hardware. It just sends voice over LTE. The towers are on CSFB (why we lose data for calls and etc), and eventually will be made VoLTE-ready. When enough towers have it, within a year and a half or so I think, they'll push an OTA to enable it.
Sent from my SM-G900P using Tapatalk
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Click to collapse
Correct, buuuuuut, that won't be for a very long time. Some throw around 2017, that I've heard, but those are just guesses, I've not seen anything on a roadmap for dates. Perhaps, I'm wrong, but I wouldn't get real excited. They have to complete the 800, 1900, 2600 LTE rollout, then end of next year they'll bump to more carriers on the 2600 band (LTE-A style for mega speeds), which the S5 won't be able to accommodate BTW, then who knows.......if you want VoLTE, you probably should seek other carriers.
http://forums.androidcentral.com/sp...321076-does-sprints-note-3-support-svlte.html
Joe0113 said:
What's that hafta do with the S5? lol
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Click to collapse
If the Note 3 can do it then it has nothing to do with the network as its clearly supported already, contrary to what the person above me posted. That means that it's now up to sprint to decide whether to make it available to the device via a software update or not
The thing with SVLTE is that it doesn't require any additional hardware unlike SVDO (S3 for example) which requires an additional radio.
CNexus said:
If the Note 3 can do it then it has nothing to do with the network as its clearly supported already, contrary to what the person above me posted. That means that it's now up to sprint to decide whether to make it available to the device via a software update or not
The thing with SVLTE is that it doesn't require any additional hardware unlike SVDO (S3 for example) which requires an additional radio.
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Click to collapse
Incorrect. SVLTE (Think the S4) Does require an additional radio.
It's not an additional radio that's required anymore.
LTE radio exist, EVDO radio exist, thus you have one for voice and data now, though now they are on the same chip technically now.
SVDO did because it needed a radio for voice and one for the data.
With LTE we now have 2 basically.
The issue is antenna and antenna switching design.
The ability to do both was removed because it has a negative impact on reception, performance etc. when using frequencies like Sprint is. Basically you have all your antennas that are routing to a single path on the chip that goes to the radios. The SVDO had multiple paths and thus could do both.
I imagine this time next year it won't be an issue but it could still be because they will begin using spectrum aggregation which again combines everything to a single point.
It will be interesting to see how things change.
SVDO was only around for a few phone model years, but I agree it was a big overlook again. They knew it wasn't going to work but they assumed because it only existed for a few model years most people had been use to not having it, but they forget about people carrier hopping and assuming it would.
CDMA was better vs. GSM in terms of voice and security but it always had this big draw back of no voice/data together without special work arounds. Once 3G is decom like 2G was in a number of years none of this will matter.
booey24 said:
I think your getting SVLTE and VoLTE mixed up.
SVLTE uses 2 radios which the Sprint Note 3 has, but VoLTE uses 1 radio which the S5 has.
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Scolias said:
Incorrect. SVLTE (Think the S4) Does require an additional radio.
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No, it no longer requires an additional radio like the S3 did for SVDO.
bryanu said:
It's not an additional radio that's required anymore.
LTE radio exist, EVDO radio exist, thus you have one for voice and data now, though now they are on the same chip technically now.
SVDO did because it needed a radio for voice and one for the data.
With LTE we now have 2 basically.
The issue is antenna and antenna switching design.
The ability to do both was removed because it has a negative impact on reception, performance etc. when using frequencies like Sprint is. Basically you have all your antennas that are routing to a single path on the chip that goes to the radios. The SVDO had multiple paths and thus could do both.
I imagine this time next year it won't be an issue but it could still be because they will begin using spectrum aggregation which again combines everything to a single point.
It will be interesting to see how things change.
SVDO was only around for a few phone model years, but I agree it was a big overlook again. They knew it wasn't going to work but they assumed because it only existed for a few model years most people had been use to not having it, but they forget about people carrier hopping and assuming it would.
CDMA was better vs. GSM in terms of voice and security but it always had this big draw back of no voice/data together without special work arounds. Once 3G is decom like 2G was in a number of years none of this will matter.
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Click to collapse
This is technically correct, the best kind of correct. There are multiple radios on the S5 SoC, but only one transmission path so only one radio can be used at a time. (Hence why we have eCSFB) In order for SVLTE to work at the same time using LTE/1x like in the past, you need to have TWO radios that are working simultaneously and not one at a time like on the S5.
In the long run this is a better solution, but I still think they should have held off on single transmission path until VoLTE was ready to roll out.
Here you go kiddos. Exclusive information and details on Sprint's VoLTE.
http://s4gru.com/index.php?/blog/1/...th-domestic-and-international-volte-carriers/
sent from an underwater dust storm with my Sprint S5
Scolias said:
This is technically correct, the best kind of correct. There are multiple radios on the S5 SoC, but only one transmission path so only one radio can be used at a time. (Hence why we have eCSFB) In order for SVLTE to work at the same time using LTE/1x like in the past, you need to have TWO radios that are working simultaneously and not one at a time like on the S5.
In the long run this is a better solution, but I still think they should have held off on single transmission path until VoLTE was ready to roll out.
Click to expand...
Click to collapse
The one radio in the S5 saves a lot of power compared to the 2 radios that the HTC One has. Honestly I don't see a reason to even implement VoLTE in the US since they are implementing 1x advanced.
mmark27 said:
Here you go kiddos. Exclusive information and details on Sprint's VoLTE.
http://s4gru.com/index.php?/blog/1/...th-domestic-and-international-volte-carriers/
sent from an underwater dust storm with my Sprint S5
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Click to collapse
Yup... Honestly I don't know why VoLTE is preferred. The 1x Advanced that Sprint is putting on the 800 mhz bands (and eventually the 1900 once the older phones start phasing out) frees up a lot of spectrum so they can have a lot more calls going through any single tower. With VoLTE they would suffer the same exact data bandwidth limitations.
numus said:
The one radio in the S5 saves a lot of power compared to the 2 radios that the HTC One has. Honestly I don't see a reason to even implement VoLTE in the US since they are implementing 1x advanced.
Yup... Honestly I don't know why VoLTE is preferred. The 1x Advanced that Sprint is putting on the 800 mhz bands (and eventually the 1900 once the older phones start phasing out) frees up a lot of spectrum so they can have a lot more calls going through any single tower. With VoLTE they would suffer the same exact data bandwidth limitations.
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Click to collapse
Correct, 800SMR is going to do wonders to Sprint coverage and clarity. The VoLTE will allow simultaneous voice and data again AND it's a global standard protocol....... so that's why it's preferred eventually. Also, once Sprint's network is fully implemented (end of 2015), there will be no bandwidth limitations, that's the upper hand that Sprint has for the patient, tons of spectrum and they're going to utilize it well.
sent from an underwater dust storm with my Sprint S5
mmark27 said:
Correct, 800SMR is going to do wonders to Sprint coverage and clarity. The VoLTE will allow simultaneous voice and data again AND it's a global standard protocol....... so that's why it's preferred eventually. Also, once Sprint's network is fully implemented (end of 2015), there will be no bandwidth limitations, that's the upper hand that Sprint has for the patient, tons of spectrum and they're going to utilize it well.
sent from an underwater dust storm with my Sprint S5
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Click to collapse
When in the history of Sprint have they ever actually done something well, no matter how many resources they have had?!? They are still trying to play catch up to every other network (and are falling behind every day). Personally I think simultaneous voice and data is kinda worthless (had it on my M7 and never used it) and there will always be bandwidth limitations.
Scolias said:
This is technically correct, the best kind of correct. There are multiple radios on the S5 SoC, but only one transmission path so only one radio can be used at a time. (Hence why we have eCSFB) In order for SVLTE to work at the same time using LTE/1x like in the past, you need to have TWO radios that are working simultaneously and not one at a time like on the S5.
In the long run this is a better solution, but I still think they should have held off on single transmission path until VoLTE was ready to roll out.
Click to expand...
Click to collapse
numus said:
When in the history of Sprint have they ever actually done something well, no matter how many resources they have had?!? They are still trying to play catch up to every other network (and are falling behind every day). Personally I think simultaneous voice and data is kinda worthless (had it on my M7 and never used it) and there will always be bandwidth limitations.
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Click to collapse
Thanks for the info, guys. This is interesting -- in contrast to the Moto X, which already supports simultaneous voice and data (ONLY on LTE). I can confirm it works perfectly on the Moto X. Also, there are no bandwidth limitations, due to Sprints use of TD-LTE (Time Division Long Term Evolution).
(I'm NOT referring to VoLTE)
Nice to have learned something new about the SGS5 though... :good:
samwathegreat said:
Thanks for the info, guys. This is interesting -- in contrast to the Moto X, which already supports simultaneous voice and data (ONLY on LTE). I can confirm it works perfectly on the Moto X. Also, there are no bandwidth limitations, due to Sprints use of TD-LTE (Time Division Long Term Evolution).
(I'm NOT referring to VoLTE)
Nice to have learned something new about the SGS5 though... :good:
Click to expand...
Click to collapse
The HTC One (M7 not sure about M8) supports the same thing. The reason it is only on LTE is because on all phones, 1x and EVDO are the same radio (working off CDMA2000 with the chip supporting both 1xRTT and 1xEV-DO).
In the case of the Moto X, there is a separate chip specifically for LTE while the Samsung Galaxy S 5 sticks all of them on the same chip. So while the Moto X is supporting both voice and data at the same time, it has to power the radios for 1xRTT or 1xEVDO and the one for LTE, which means you are powering 2 while the Galaxy S 5 is only powered 1... Also there will always be bandwidth limitations... They still rely on a Fiber and/or Microwave back end which doesn't have infinite bandwidth capabilities.
numus said:
The HTC One (M7 not sure about M8) supports the same thing. The reason it is only on LTE is because on all phones, 1x and EVDO are the same radio (working off CDMA2000 with the chip supporting both 1xRTT and 1xEV-DO).
In the case of the Moto X, there is a separate chip specifically for LTE while the Samsung Galaxy S 5 sticks all of them on the same chip. So while the Moto X is supporting both voice and data at the same time, it has to power the radios for 1xRTT or 1xEVDO and the one for LTE, which means you are powering 2 while the Galaxy S 5 is only powered 1... Also there will always be bandwidth limitations... They still rely on a Fiber and/or Microwave back end which doesn't have infinite bandwidth capabilities.
Click to expand...
Click to collapse
Thanks for pointing out the error in my logic: that the MAXIMUM 8.5kbps used by the EVRC/EVRC-B voice codec might actually contribute to "bandwidth limitations" due to using both radios at the same time
Since this would seem beyond insignificant, all things considering, I HAD failed to take this into consideration LMAO.
Nonetheless, thanks for the clarification.
I am well aware of the dual-radio nature of the X....just wasn't aware that the same didn't apply to the SGS5...
Haha I'll keep in mind that I might *possibly* be shorted 8.5kbps the next time I make a call while using my LTE data
samwathegreat said:
Thanks for pointing out the error in my logic: that the MAXIMUM 8.5kbps used by the EVRC/EVRC-B voice codec might actually contribute to "bandwidth limitations" due to using both radios at the same time
Since this would seem beyond insignificant, all things considering, I HAD failed to take this into consideration LMAO.
Nonetheless, thanks for the clarification.
I am well aware of the dual-radio nature of the X....just wasn't aware that the same didn't apply to the SGS5...
Haha I'll keep in mind that I might *possibly* be shorted 8.5kbps the next time I make a call while using my LTE data
Click to expand...
Click to collapse
Do you read what you quote? There is a bandwidth limitation in LTE in general. Unlike 1x Advanced which is dedicated spectrum for calls only, VoLTE is going to run into bandwidth limitations because it is LTE. Guess what happens if everyone is using data at the same time on a tower?!? Guess what happens to Voice that requires data bandwidth to function... Granted you can always support carriers implementing QOS... I am sure everyone would be very happy with that.
numus said:
Do you read what you quote? There is a bandwidth limitation in LTE in general. Unlike 1x Advanced which is dedicated spectrum for calls only, VoLTE is going to run into bandwidth limitations because it is LTE. Guess what happens if everyone is using data at the same time on a tower?!? Guess what happens to Voice that requires data bandwidth to function...
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Click to collapse
Did you read my quote? When I said there were no "bandwidth limitations" on the X --- I was referring to "bandwidth limitations" in respect to using both VOICE and DATA at the same TIME. Why else would have I mentioned "TD-LTE"??? Please explain...
Related
Who knows that?
eshghman189 said:
Who knows that?
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Click to collapse
The 4g portion will only be compatible with sprint's network.
The phone can technically work with other cdma carriers if you know what your doing, and will require some skill to get it to work, or a guide from someone that figures it out. 3G and 1x would possibly work if stuff is configured correctly, the radio is technically compatable with other carriers for everything other than 4g
This doesn't mean you can walk into bell south or verizon and say "hook it up" because that will definitely not work. You gotta make it work, I'm sure more info on how to do it will arise as people get their hands on it, as some have gotten the hero to work off sprints network.
I doubt 4G will work on Verizon's network those are to my knowledge the only major CDMA netwrks (in the US at least).
Verizon's take on 4g will be LTE while Sprint is going WiMax so I seriously doubt the phone's 4G radio will work across the board however the 3G and the call CDMA radio should work.
Sebrina said:
I doubt 4G will work on Verizon's network those are to my knowledge the only major CDMA netwrks (in the US at least).
Verizon's take on 4g will be LTE while Sprint is going WiMax so I seriously doubt the phone's 4G radio will work across the board however the 3G and the call CDMA radio should work.
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Click to collapse
From what I gather the radios will operate on different frequencies
wimax on 2.5 GHz
http://en.wikipedia.org/wiki/WiMAX#Spectrum_allocation
lte is on 700 MHz
http://en.wikipedia.org/wiki/3GPP_Long_Term_Evolution#Frequency_bands_and_channel_bandwidths
so I'm going to go ahead and say not a chance of it working.... although I may be wrong
Tanx
Plz tell me more
more about what? the different frequencies?
Um well, for example you can't tune your tv to the radio channel even though they use similar technologies. (well you could back in the day depending on your tv but that isn't helping my point ) But it just uses different frequencies, look at this for a better understanding of frequency allocation,
http://upload.wikimedia.org/wikiped...locations_Chart_2003_-_The_Radio_Spectrum.jpg
The chart is rather busy, but see how each is boxed off? That is what a radio designed to operate on will be limited to. the wimax and lte are very far apart from each other in this spectrum, it will be extremely unlikely it will be able to operate on both frequencies.
This talks about the radio used in the EVO.
http://www.thesearethedroids.com/2010/03/25/sprint-evo4-chipset-qsd8650-supports-gsm-and-hspa/
Not an insane amount of LTE info is out there other than what's been cleared by the FCC, more info on the radios that will be used as soon as one is released. I know one thing, the freqs are different so the same roaming you enjoy now with sprint 3g will not be shared with 4g with verizon when they kick off LTE. 3g roaming will stay unaffected per sprint and verizon's roaming agreement because of same technologies and freqs used. Only the 4g portion will be different.
One chipset to be on the lookout for is this http://www.beceem.com/ends_4G_debate_LTE.html it will support both technologies, but it unfortunately will not be in the sprint EVO. Be on the lookout though as something with this chipset might counter the aforementioned roaming problem.
johnsongrantr said:
more about what? the different frequencies?
Um well, for example you can't tune your tv to the radio channel even though they use similar technologies. (well you could back in the day depending on your tv but that isn't helping my point ) But it just uses different frequencies, look at this for a better understanding of frequency allocation,
http://upload.wikimedia.org/wikiped...locations_Chart_2003_-_The_Radio_Spectrum.jpg
The chart is rather busy, but see how each is boxed off? That is what a radio designed to operate on will be limited to. the wimax and lte are very far apart from each other in this spectrum, it will be extremely unlikely it will be able to operate on both frequencies.
This talks about the radio used in the EVO.
http://www.thesearethedroids.com/2010/03/25/sprint-evo4-chipset-qsd8650-supports-gsm-and-hspa/
Not an insane amount of LTE info is out there other than what's been cleared by the FCC, more info on the radios that will be used as soon as one is released. I know one thing, the freqs are different so the same roaming you enjoy now with sprint 3g will not be shared with 4g with verizon when they kick off LTE. 3g roaming will stay unaffected per sprint and verizon's roaming agreement because of same technologies and freqs used. Only the 4g portion will be different.
One chipset to be on the lookout for is this http://www.beceem.com/ends_4G_debate_LTE.html it will support both technologies, but it unfortunately will not be in the sprint EVO. Be on the lookout though as something with this chipset might counter the aforementioned roaming problem.
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Click to collapse
tanx,very useful
interesting
Not that my phone ever roams (I don't travel much), but when it does my Sprint will only go to Verizon? Did I understand that correctly?
Manicmobileaddict said:
Not that my phone ever roams (I don't travel much), but when it does my Sprint will only go to Verizon? Did I understand that correctly?
Click to expand...
Click to collapse
Yes, your Sprint phone will only roam on Verizon's network cause their both cdma networks.
Luckily for Sprint users Verizon covers more area than any other carrier in the US.
Luckily for Sprint users Verizon covers more area than any other carrier in the US.
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that's not true Sprint has the biggest coverage area of all the us carriers. don't beleave everything you hear from a commercial.
Sent from my HERO200 using the XDA mobile application powered by Tapatalk
chippillie said:
that's not true Sprint has the biggest coverage area of all the us carriers. don't beleave everything you hear from a commercial.
Click to expand...
Click to collapse
Where is this info from?
whole world
I think this phone is for the whole world not sprint,
sprint is only for 4g
eshghman189 said:
I think this phone is for the whole world not sprint,
sprint is only for 4g
Click to expand...
Click to collapse
Do WHAT?!
This phone is built for Sprint. Sprint is 3G/4G.
eshghman189 said:
I think this phone is for the whole world not sprint,
sprint is only for 4g
Click to expand...
Click to collapse
http://www.thesearethedroids.com/2010/03/25/sprint-evo4-chipset-qsd8650-supports-gsm-and-hspa/
However, it’s almost guaranteed that you won’t be able to use over half of those networks because the phone will lack the right amplifiers and/or antennas
Click to expand...
Click to collapse
big band
It is support width band,I think u can change rillphone to work with other country and netwoek
eshghman189 said:
It is support width band,I think u can change rillphone to work with other country and netwoek
Click to expand...
Click to collapse
I highlighted the part you need to re-read in my last post (it was a pretty lengthy quote)
but unless you plan to electrically (as in soldering iron and tiny electronic parts) modify your phone, don't plan on it being able to actually use those other frequencies.
They are not advertising it as a world phone (sprint has made worldphones before and advertised it because it's a selling point) so they are not going to put needless hardware that they won't enable, doesn't make sense, and it costs them additional money to make it that way.
If you did get that modification in, you will then have to edit the programming of your phone's cellular radio to talk on those frequencies and towers because they will not be built into whatever radio firmware ships with it because it wasn't needed because the amplifiers were left out. That will be an almost as equally difficult task.
I don't know man... good luck if you don't believe me.
me(US T-MO) and my friend(sprint) wondering if any of u know if the HTC EVO 4G gonna have the worldphone compatability(GSM slot for gsm networks).my friend currently using the TOUCH PRO 2 from sprint and he has the ability to switch the phone to GSM carriers.jus wondering if the EVO gonna have the compatibilty.if yes defenetly dropping my HD2.
The Evo 4G is a CDMA phone it will not work on GSM and never will since it doesnt even come with a slot to insert a sim card.
yea i know that but the ones that u've seen on every website and videos r not the OFFICIAL EVO i think cuz they didnt even announced the official date but if its CDMA im out of luck and wish for a GSM version of the EVO.
GHOST99K said:
if its CDMA im out of luck and wish for a GSM version of the EVO.
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Click to collapse
It's 100% CDMA w/no SIM slot. So I guess your out of luck
The big thing about the EVO 4G is the fact that it's a CDMA/Wi-Max. If it had a SIM slot, and you put it on a GSM network like T-Mobile, you wouldn't be able to connect to Sprint's 4G network and lose the one big advantage of this phone. Sure it's got 720p HDMI output and 8MP camera, but other than that and Wi-Max, it's got very similar specs to the HD2.
The other reason could be the fact that they wanted it to run Android, and I have yet to see any CDMA/GSM World Phones running Android natively so they may not have worked out the whole dual mode switching in Android - but I could be wrong about that one.
well.......i guess i have to be patient for something better by HTC on GSM carrier network with ANDROID 2.1.honestly i bought the HD2 and i've flashed custom ROM but still not satisfied at all with WM.i would get me NEXUS ONE but then again better phone will come out by HTC every 3-4 months.as far as 4G its not necessary for me at all.i will patiently wait till end of summer for the better.thanks guys
Look it up. GOOGLE IT ESPECIALLY WITH ANDROID
Sigh why do people get fooled by Sprint's cheap marketing... T-mobile's releasing HSPA+ 3G which is going to be faster than Sprints so called "4G"
Blackman778g said:
Sigh why do people get fooled by Sprint's cheap marketing... T-mobile's releasing HSPA+ 3G which is going to be faster than Sprints so called "4G"
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dude. wimax. shut up.
mountaindont said:
dude. wimax. shut up.
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Sigh... When people don't know the facts.
http://www.cellphonesignal.com/t-mobile-hspa-vs-sprint-wimax-by-pcworld/
http://www.pcmag.com/article2/0,2817,2359139,00.asp
Blackman778g said:
Sigh... When people don't know the facts.
http://www.cellphonesignal.com/t-mobile-hspa-vs-sprint-wimax-by-pcworld/
http://www.pcmag.com/article2/0,2817,2359139,00.asp
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Click to collapse
Dude....Let Sprint and everyone that is on Sprint enjoy the fact that SPRINT will have one (if not the best) of the best phones ever made for a little while until another one comes out. Tmo has the HD2...now is Sprints turn, chill out!
You got HSPA+? Good for you....we'll have 4G! Is that simple.
Blackcircle said:
Dude....Let Sprint and everyone that is on Sprint enjoy the fact that SPRINT will have one (if not the best) of the best phones ever made for a little while until another one comes out. Tmo has the HD2...now is Sprints turn, chill out!
You got HSPA+? Good for you....we'll have 4G! Is that simple.
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Click to collapse
Alright I'll settle for that... just trying to make sure people don't fall for the marketing gimmick. I had every carrier and been a loyal customer to them all.... Some people will switch just for a single phone even if they don't have reception in their area. Make a smart move it'll last two full years.
Blackman778g;I had every carrier and been a loyal customer to them all.... [/QUOTE said:
really??
boys and girls.. can we all say "contradiction"?
had to do it to u...
all major carriers will come out with their own "4G" setup, that is to be expected. WHEN will it hit the market; is the real question. Sprint has WiMax and it is being rolled out aggressively.
As they saying goes.."one bird in hand.. is better than two in the bush"
that being said... I live in a WiMax area and have the Overdrive. It is faster than 3G but I can only get 20% signal in areas that I am most in.
I hope they get more towers up in my area!!!!!
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Click to collapse
Blackman778g said:
Alright I'll settle for that... just trying to make sure people don't fall for the marketing gimmick. I had every carrier and been a loyal customer to them all.... Some people will switch just for a single phone even if they don't have reception in their area. Make a smart move it'll last two full years.
Click to expand...
Click to collapse
So when is this mythical HSPDA+ coming out? WiMax has already been out for over a year where I live, and I've not heard of a single person with WiMax-like speeds on any other carrier. T-Mobile is typically last to the game in that regard, but either way, you guys already have the HD2, which I'd rather have anyways.
WiMax is not certified 4G and will never be. I'm really shocked that Sprint hasn't been called out on this and hasn't had their false adverts of a "4G" network pulled.
march7th said:
WiMax is not certified 4G and will never be. I'm really shocked that Sprint hasn't been called out on this and hasn't had their false adverts of a "4G" network pulled.
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Click to collapse
why would it have to be "certified 4G?" also, from what I've read from the beginning, is that WiMax and LTE are SO SIMILAR, that it wouldn't cost much for Clear/Sprint to fully convert. The even planned on having a combination of the two services.
methinks you doth protest too much.
ScrapMaker said:
why would it have to be "certified 4G?" also, from what I've read from the beginning, is that WiMax and LTE are SO SIMILAR, that it wouldn't cost much for Clear/Sprint to fully convert. The even planned on having a combination of the two services.
methinks you doth protest too much.
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Click to collapse
wimax and lte use different freqs, converting would not only change the protocol(like software) but the antennas, transponders, receivers and transmitters (hardware)
then all the phones themselves would need new radios (hardware + software) It would be a huge mess, I highly doubt they will convert the technology, hope they just adopt LTE with Wimax and your phone supports both someday. As they already have chipsets that support both technologies at the same time with multiple radios and transceivers. But my money is the conversion of technology will not happen, it will just be integrated into the phones instead of the towers.
Now the wimax/4g thing, wimax has been branded 4g, 4g is a general term...(yes I know it's a stardard and has minimum req's) but the term works for it's purpose; recognition more than a actual "standard". evdo started getting called 3g when the 3g term got popular and was a "feature" and was easier to remember no actual feature was added for them to call it 3g.
The point is the idea gets across, as it is agreed they both generally mean the same thing, you know what it means, they know what it means, and making that kinda correction makes people sound like asses. Much like spelling correctors.
BAM! I knew I read that before.
ScrapMaker said:
BAM! I knew I read that before.
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not everything on you read on the internet is true, but facts are facts.. look
Wimax operates on 2.5Ghz
http://en.wikipedia.org/wiki/WiMAX#Spectrum_allocation
LTE operates on 700Mhz
http://en.wikipedia.org/wiki/3GPP_Long_Term_Evolution#Frequency_bands_and_channel_bandwidths
the two operate on two extremely different frequencies, you can't magically change a phone that is built to operate on one freq to start using one that differently. It's just not physically capable of doing it. No amount of software is going to change that.
That article was written in september 09' sprint has moved forward with wimax, they have made their decision, once they put equipment out in customers hands, they will have to cut some customers off by making drastic changes at this point in the game. To jump back at this point would be insanity. The infrastructure is already being built, and in some cases already built.
johnsongrantr said:
not everything on you read on the internet is true, but facts are facts.. look
Wimax operates on 2.5Ghz
http://en.wikipedia.org/wiki/WiMAX#Spectrum_allocation
LTE operates on 700Mhz
http://en.wikipedia.org/wiki/3GPP_Long_Term_Evolution#Frequency_bands_and_channel_bandwidths
the two operate on two extremely different frequencies, you can't magically change a phone that is built to operate on one freq to start using one that differently. It's just not physically capable of doing it. No amount of software is going to change that.
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Why is that? Radios can transmit on all sorts of frequencies... you have no idea how they designed their antennae or transmitters. If Clear says, themselves, that the technology is 80% identical, then it's fairly believable. I've been hearing that for years, anyhow.
Hell, just look at AT&T, they have 3G on all sorts of bands, and that didn't stop them people from using them. This argument is pointless. Clear could have hybrid modems in store, or possibly their devices can already use the spectrum to reference. All I'm saying is Sprint/Clear aren't really committing false-advertising. Comparing some mythical unicorn that T-Mobile *might* have in a few markets sometime soon, to WiMax, which has been out for quite some time, doesn't make much sense.
For now, it's 4G... the fastest, and I believe they have the right to call it that. It's Sprint's fourth-generation network. For years, the carriers bounced back and forth as to who had the fastest network, and you didn't see anyone renaming their from 3G.
ScrapMaker said:
Why is that? Radios can transmit on all sorts of frequencies... you have no idea how they designed their antennae or transmitters. If Clear says, themselves, that the technology is 80% identical, then it's fairly believable. I've been hearing that for years, anyhow.
Hell, just look at AT&T, they have 3G on all sorts of bands, and that didn't stop them people from using them. This argument is pointless. Clear could have hybrid modems in store, or possibly their devices can already use the spectrum to reference. All I'm saying is Sprint/Clear aren't really committing false-advertising. Comparing some mythical unicorn that T-Mobile *might* have in a few markets sometime soon, to WiMax, which has been out for quite some time, doesn't make much sense.
For now, it's 4G... the fastest, and I believe they have the right to call it that. It's Sprint's fourth-generation network. For years, the carriers bounced back and forth as to who had the fastest network, and you didn't see anyone renaming their from 3G.
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I have no idea how they designed their transmitter? This is more or less true, I don't know the exact specifics of their radios, but I have a really really good idea. I used to fix radios for the army... I have an good general knowledge of radio technology.
I don't have the exact links but I've posted some to chipset makers in this forum. One is for the evo's chipset, and one for for a future phone's chipset. The future one has radios *note plural* built in that are capable of broadcasting on both the 700 and 2.5 frequencies. The EVO's is not capable of the 700mhz only the 2.5ghz (among others 800 & 1900 but not 700)
The reason you can tune civilian band and police radios to multiple frequencies is because of transistors. But you're talking a very small spectrum. A common span is like 1-50Mhz difference. The Bigger the gap the bigger and more elaborate the electronic circuitry is required. Having to tune amplifiers as well as antennas. I'm not going to give a lesson on radio broadcast technology cause, well I'm just not.
For antennas they have to be cut to exact length based off their wavelength to preform optimally. As the frequency increases the length gets shorter but the principal is still there. It has to be more or less exact, the more you deviate the less clear the signal will be with the higher freqs the more exact it needs to be. Fudging a difference that big will not work for a clear and precise digital signal.
SO... while a cell phone radio might change it's freqs slightly depending on open channels, the range is fairly close, a radio that operates on 700mhz might go as high or low as 725 for example but it will not, and I repeat will NOT do a 1800Mhz difference. Hopefully that sheds some light on this subject.
I can't go into how their backend protocol is worked, because I honestly haven't ever messed with it and would only be speculation on my part. So it might be correct, the software might be easily interchangeable, but the hardware is not, and clear/wimax even stated so in that article. They said they had equipment capable of both or options or something. But a change is needed for sure. The evo is sprint's flagship wimax phone, and it is not capable of the freqs lte currently uses.... end of story.
Welp, looks like it's going that way...
http://www.engadget.com/2011/02/15/sprint-evaluating-switch-to-lte-over-the-next-four-to-six-months/
...thing is, there hasn't been any new WiMAX phone announced this year, so either they're relying on riding that EVO and Epic wave to get new WiMAX customers, or maybe they do have something up their sleeve.
In any event, I don't see that many new customers signing up for Wimax, so to LTE Sprint will go. Now what do we do with our Evo at that point?
Other than the shifts but if they give me a choice to choose a new phone I'm in
Sent from my gingerbread evo 4g
It's like sprint is playing the "you can't get mad at me, i'm not touching you" while holding hand in front of face game with all these changes that piss everybody off without letting them go etf-free
Oh, they would have to provide us with a LTE phone if they do switch. At least offer us a pretty hefty discount. Otherwise, I see a huge class-action lawsuit headed over their way. I'd love for this switch to happen. WiMax is just not cutting it.
From the user comments of the linked article:
They're still going to roll out WiMax and then just add LTE functionality later on. Again, It's just a baseband card swap and a software upgrade. The phones would probably use a dual-mode WiMax/LTE chip (like the one introduced last year by Beceem). Sprint did a pretty good job of future-proofing their network and WiMax was a better/cheaper choice for "4G"... Verizon was having some major 3G/4G handoff issues in mid-December and there's still no word of that being resolved. That's a major issue for Big Red and could slow or kill LTE adoption (imagine having to either wait about 2 minutes or even having to reboot your phone whenever you go from 4G back to 3G). I'm not even getting into AT&T and Verizon's LTE spectrum limitations.
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m4rk0358 said:
From the user comments of the linked article: They're still going to roll out WiMax and then just add LTE functionality later on. Again, It's just a baseband card swap and a software upgrade. The phones would probably use a dual-mode WiMax/LTE chip (like the one introduced last year by Beceem). Sprint did a pretty good job of future-proofing their network and WiMax was a better/cheaper choice for "4G"... Verizon was having some major 3G/4G handoff issues in mid-December and there's still no word of that being resolved. That's a major issue for Big Red and could slow or kill LTE adoption (imagine having to either wait about 2 minutes or even having to reboot your phone whenever you go from 4G back to 3G). I'm not even getting into AT&T and Verizon's LTE spectrum limitations.
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But they would eventually have to actually flip the switch to LTE.. would they not have to pick one or the other?
As long as I got a huge discount on an LTE phone, I'd be okay with this. I like WiMAX, but for the dev community, LTE is going to be way better.
akarol said:
Oh, they would have to provide us with a LTE phone if they do switch. At least offer us a pretty hefty discount. Otherwise, I see a huge class-action lawsuit headed over their way. I'd love for this switch to happen. WiMax is just not cutting it.
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They're facing this scenario now, if they turn off the iDen network to use LTE. Some speculate that Sprint will lose a lot of money on this, but all they have to do is sell the spectrum that wimax is on now. T-Mobile would buy it...
AbsolutZeroGI said:
As long as I got a huge discount on an LTE phone, I'd be okay with this. I like WiMAX, but for the dev community, LTE is going to be way better.
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I'm also curious about the stuff I've been reading recently regarding how tightly controlled LTE access can be by carrier. Presumably the same restrictions would apply when tethering?
they will have pry my evo from my cold dead hands....
cyanogen/evervol-acies flavored gingerbread
drbadass said:
But they would eventually have to actually flip the switch to LTE.. would they not have to pick one or the other?
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Not really cause Wimaxx is just another channel or frequency. I mean they still have 2G/3G and now 4G, LTE will just be another channel that they will be able to accomidate
I say the only reason why the would make that switch is to keep up or ahead with the other carriers, t-mobile, att, Verizon so why not make the switch everyone gsm and running on sim chips mmm nice different phones on different networks sounds fun
Sent from my PC36100-EVO-using Tapatalk
drbadass said:
I'm also curious about the stuff I've been reading recently regarding how tightly controlled LTE access can be by carrier. Presumably the same restrictions would apply when tethering?
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This is what scares me. I know LTE is faster than wimax. (Job I work at sells both Wimax capable cards and LTE broadband cards now and I have installed both on computers, and speedtest wise, LTE was pulling 15 down and 1.5 up. Wimax in our area usually does 5-7 down, and 1 up.
But I don't want Sprint to be able to decide that what I do with the data access I am provided isn't what they think I should. The fact they can block sites, charge rates for sites, and so forth is very bothersome. It is the same crap certain ISP carries are looking to do.
It is this reason (among data caps) that I decided not to wait for the LTE thunderstorm phone(or w/e its called, im kinda tired ) and go with verizon over sprint.
I just with their Wimax was better in the Cincinnati, OH area than it currently is. Map shows I should have 4G outside everywhere but my backyard. And I barely get it in my front lawn where I should have a perfect signal.
Does anyone have a link to the story of how carriers can control access to the web using LTE. I read it but don't remember where. This is very disturbing that the carriers will have this much power over our web viewing habits
Don't worry fellow evonauts, they (probably) won't block your fetish adult entertainment.
But seriously, better speeds would be awesome, better coverage would be great but the capability to throttle or block what i want to do with my "unlimited" connection is unacceptable.
Here's some things to remember before anyone gets up in arms over this:
1. Between the Sprint, Clear, Comcast, and Time Warner brands there are millions of users on the Clearwire WiMax network, many of whom are in contracts based on WiMax devices or services. They're not going to just flip a switch in a few months and suddenly none of us have 4G anymore. I would not expect to see much further WiMax development beyond what's known about at the time of any LTE announcement, but by the time the WiMax network goes dead anyone posting here will have moved on to a newer phone.
2. There's no reason at all that this would need to be done as an on/off type switch. They install the hardware bits needed for LTE, then switch channels of their available spectrum over as dictated by utilization. AT&T's migration from TDMA to GSM after the Cingular buyout took years to complete.
3. The Evo Shift just came out and the Blackberry Playbook with WiMax has been announced and given a rough street date. Like most of us existing users, these users will likely for the most part be in contracts, meaning if Sprint does anything that significantly impacts the usability of those devices (such as terminating WiMax service) they'll need to either give us cheap/free upgrades to LTE phones or let us out of contract ETF-free.
tl;dr version: LTE is probably coming, since Sprint's rapidly becoming the odd man out in the 4G cell world, but there's no reason for current WiMax users to panic.
edit:
drbadass said:
I'm also curious about the stuff I've been reading recently regarding how tightly controlled LTE access can be by carrier. Presumably the same restrictions would apply when tethering?
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ghodzilla5150 said:
Does anyone have a link to the story of how carriers can control access to the web using LTE. I read it but don't remember where. This is very disturbing that the carriers will have this much power over our web viewing habits
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Any ISP has about the same power. It has nothing to do with the last mile medium and LTE will change nothing about this.
Regarding tethering, there is no way to tell for certain by looking at the data transmitted whether a user is tethering or not when a modern smartphone is involved, since they're capable of doing anything a full PC could do with that data connection. Certain types of data may be suspicious and more likely to have come from a PC, but nothing could be proven to any reasonable standard as long as they have not loaded a "tattler" program in to the OEM ROM to explicitly identify tethering. Assuming a rooted phone, this could be removed and of course would not even be in AOSP-based ROMs.
Good rational post. Thanks.
wolrah said:
Here's some things to remember before anyone gets up in arms over this:
1. Between the Sprint, Clear, Comcast, and Time Warner brands there are millions of users on the Clearwire WiMax network, many of whom are in contracts based on WiMax devices or services. They're not going to just flip a switch in a few months and suddenly none of us have 4G anymore. I would not expect to see much further WiMax development beyond what's known about at the time of any LTE announcement, but by the time the WiMax network goes dead anyone posting here will have moved on to a newer phone.
2. There's no reason at all that this would need to be done as an on/off type switch. They install the hardware bits needed for LTE, then switch channels of their available spectrum over as dictated by utilization. AT&T's migration from TDMA to GSM after the Cingular buyout took years to complete.
3. The Evo Shift just came out and the Blackberry Playbook with WiMax has been announced and given a rough street date. Like most of us existing users, these users will likely for the most part be in contracts, meaning if Sprint does anything that significantly impacts the usability of those devices (such as terminating WiMax service) they'll need to either give us cheap/free upgrades to LTE phones or let us out of contract ETF-free.
tl;dr version: LTE is probably coming, since Sprint's rapidly becoming the odd man out in the 4G cell world, but there's no reason for current WiMax users to panic.
edit:
Any ISP has about the same power. It has nothing to do with the last mile medium and LTE will change nothing about this.
Regarding tethering, there is no way to tell for certain by looking at the data transmitted whether a user is tethering or not when a modern smartphone is involved, since they're capable of doing anything a full PC could do with that data connection. Certain types of data may be suspicious and more likely to have come from a PC, but nothing could be proven to any reasonable standard as long as they have not loaded a "tattler" program in to the OEM ROM to explicitly identify tethering. Assuming a rooted phone, this could be removed and of course would not even be in AOSP-based ROMs.
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Maybe I'm just misunderstanding something but I'm taking this switch from WiMAX to LTE as Sprint just has to change the cards on their ends and send us current WiMAX users a software update and we can use LTE.
rkjg24 said:
Maybe I'm just misunderstanding something but I'm taking this switch from WiMAX to LTE as Sprint just has to change the cards on their ends and send us current WiMAX users a software update and we can use LTE.
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Half right. The Wimax chip in the Evo is straight Wimax...no LTE capability.
Since the wiMax is actually from Clear as far as i know, Sprints choice shouldnt really matter in the long run. WiMax wont disappear so your "old" phone should work, and Sprint actually having its own 4G network means more than likely better battery life and better connection/coverage
Still makes me wonder where this leaves WiMax. Though, Doesnt say whether or not Sprint will actually utilize LTE for its own. BUT we'll see how this all plays out. Never the less, exciting news for Sprint. Cant wait to get some of that 800mhz goodness on my next phone once Network Vision starts rolling out!!
http://newsroom.sprint.com/article_display.cfm?article_id=1989
I'm due for my upgrade in september, but I'm willing to keep my evo and save that upgrade for an LTE phone when its released.
Lightsquared still has to get the interference problem with GPS sorted out.
I wonder if the newer 4G WiMax phones will be upgradable?
sk63 said:
Lightsquared still has to get the interference problem with GPS sorted out.
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They already did if I remember correctly
Sent from my PC36100 using XDA Premium App
sk63 said:
Lightsquared still has to get the interference problem with GPS sorted out.
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They have pretty much done that:
http://www.lightsquared.com/wp-content/uploads/2011/07/PoliticoPro.6.30.11.pdf
I think that this is potentially great news. Considering that Sprint just posted another nearly billion dollars in loss for the second quarter, they need a shot in the arm badly. Instant nation-wide LTE would be a big boost to them. If they got this along with the new iPhone, I think that they could really start making some headway against the bigger phone companies.
I hope so, at any rate. I am rooting for Sprint (no pun intended) in a big way, because if they went out of business or, worse, were bought by one of the big two, I don't know what I'd do.
a lot of money needs to be pulled somewhere to make this LTE happen. I belive LTE is why Verizon charges so much for data. I hope this don't mean the end of unlimited data in the future.
I'd prefer unlimited Wimax over $80 10gb LTE any day of the week
I wonder if they will be attempting to run Wimax and LTE, using both for some reason..
jt513 said:
I wonder if they will be attempting to run Wimax and LTE, using both for some reason..
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The contact with the WiMax supplier will expire soon and no word of they will renew it
Ahh, that makes sense then. I don't use 4G much, however it is nice to have it when you need it. I live less than .1 miles from the current edge of 4G in my area.
jt513 said:
I wonder if they will be attempting to run Wimax and LTE, using both for some reason..
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They will until their contract expires, sprint will run the 2.5ghz wimax signal on a different freq than LTE I believe. I think thats what going on now; if i read correctly sprint is phasing out the nextel push to talk bs thats using their 800 freq and thats what wimax is going to use until they build network vison.
KommodoreHeinz said:
I wonder if the newer 4G WiMax phones will be upgradable?
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doubt it as that would require swapping hardware dont know if they're going to do that for millions of phones.
exciting
if this is true this is pretty exciting
I talked to one of the service people at sprint and he said its going to be a software upgrade for all the current wimax phones. He also gave me a sneak peek of some of their new phones coming out.
evilware said:
I talked to one of the service people at sprint and he said its going to be a software upgrade for all the current wimax phones. He also gave me a sneak peek of some of their new phones coming out.
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Sounds like a little guesswork mixed with a lot of BS.
evilware said:
I talked to one of the service people at sprint and he said its going to be a software upgrade for all the current wimax phones. He also gave me a sneak peek of some of their new phones coming out.
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I have a real hard time believing anyone at the Sprint store (save for MAYBE corporate) would know anything about new phones, much less be able to show you. In my experience, the in store people are more clueless about their own phones then their users are.
But i digress. I thought Sprint was going to use the LTE on the backend (i can't remember the term, backhaul, backbone, etc) to speed up wimax AND 3G in one fell swoop.
dirkyd3rk said:
They will until their contract expires, sprint will run the 2.5ghz wimax signal on a different freq than LTE I believe. I think thats what going on now; if i read correctly sprint is phasing out the nextel push to talk bs thats using their 800 freq and thats what wimax is going to use until they build network vison.
doubt it as that would require swapping hardware dont know if they're going to do that for millions of phones.
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network vision upgrades are part of phasing out nextel iden phones. they are switching all iden customers over to the new cdma ptt thing they have, and will have phones supporting it out later this year. I'm pretty sure iden is set to run till 2013 too.
wimax can't run on 800MHz less they get it provisioned with the FCC to run on that freq too b/c right now its only provisioned for the higher band ones for some reason.
theres no clue what exactly they are going to do with wimax in the far future exactly wether it be for backhaul or something else.
The lightsquared deal gets lightsquare the ability to set up their lte on sprints network and they plan to have it rolled out to first markets in 2012, and will have nationwide coverage over one year ahead of the FCC mandate which puts it around 2014
MaxCarnage said:
Sounds like a little guesswork mixed with a lot of BS.
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I believe that you are correct. There was an article not long ago elaborating on Sprint's plan to move to LTE in the future due to both Clearwire's financial troubles and instability, as well as LTE's ultimate higher potential.
It stated that as the move to LTE gets closer, phones that support both will begin to be released. However, I was made to understand that LTE and WiMAX require different hardware so they would both have to be included. This would appear to indicate that a software/firmware update to an existing phone designed for WiMAX would not be a reality.
evilware said:
I talked to one of the service people at sprint and he said its going to be a software upgrade for all the current wimax phones. He also gave me a sneak peek of some of their new phones coming out.
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Sorry bro who ever you talked to does'nt know what they talking about wimax and lte use defferent radios. We will need to get new phones.
Sent from my PC36100 using XDA Premium App
sk63 said:
Lightsquared still has to get the interference problem with GPS sorted out.
MaxCarnage said:
They have pretty much done that:
http://www.lightsquared.com/wp-content/uploads/2011/07/PoliticoPro.6.30.11.pdf
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They actually aren't even close to working that out yet. As a matter of fact, all of the major aviation related industry groups have just formed a coalition (click this link to see the coalition web page) to fight Lightsquared's proposal. The problem is, Lightsquared's so called "solution" is to require all GPS equipment manufactures to upgrade their devices to eliminate the interference that Lightsquared's system would cause. This is probably not going to happen, as it would cost thousands of dollars each to replace the GPS navigation system in every aircraft that has one, which includes the majority of aircraft currently flying in the US, including US military aircraft. Because it is a flight safety issue, and their current proposed solution would involve millions, or even billions of dollars to implement, I seriously doubt a solution that will allow Lightsquared to go forward will come very soon.
While I am by no means an expert on the technology, my understanding of the problem is that Lightsquared's high powered land based transmitters operate on a frequency band so close to the band that GPS satellite's low powered downlink signals are transmitted on, that they basically jam the signal that the GPS receivers are trying to receive. The result is that GPS receivers are effectively useless when operating anywhere near a Lightsquared transmitter. Sounds pretty hard to fix to me.
wanted to comment again on the Lightsquared LTE talk about the interference with GPS devices. The CEO was on CNBC this past week and when the question came up about the interference it was pretty simple answer and it really made it seem like the media has gotten it all backwards.
The FCC has mandated they have a buildout done by time X and granted them access to spectrum X. Well the interference with GPS devices that has come up is not b/c of Lightsquared's fault, it is b/c the GPS devices are not filtering out lightsquared's freq/spectrum even though they were given years head notice that this would be happening. So its b/c the GPS devices are coming onto Lightsquared's area and not the other way around.
the gps issue is a non issue with regards to lightsquared b/c its not their fault, its the gps manufacturers for not taking proper measures to be ready for lightsquareds rollout when they knew way in advance.
After checking in to why this would not work I was told that it just isn't supported. You can use 4G and wifi data duringa call but not 3G. It's a little bit ofa draw back for me. I was just wondering what any one else's thoughts where on this?
I do like the phone so far other than this.
tman73 said:
After checking in to why this would not work I was told that it just isn't supported. You can use 4G and wifi data duringa call but not 3G. It's a little bit ofa draw back for me. I was just wondering what any one else's thoughts where on this?
I do like the phone so far other than this.
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I'm taking a chance on sounding silly, but that's just the way it is on CDMA networks. You can only do one or the other on 3G: voice or data. Being able to use voice and data simultaneously is a perk of 4G, LTE or wifi. Of course, if you have no LTE available where you are, or no wifi, it's voice or data. I know it's frustrating. I live in Minneapolis, Uptown area. We never did get very good Wimax at our house, especially indoors.
When the LTE phones came out, I was in no hurry to upgrade, as there was no LTE anywhere in the Twin Cities. No one could hazard a guess as to when it would be rolled out. The Evo LTE has been out for almost a year, and LTE is finally becoming available. It's still pretty spotty, though. The good thing is, even with a weak signal at my house, I still can get nearly 5000kbps down inside my house. That's a lot better than 3G for sure! Sprint is saying we'll have LTE pretty much throughout the city in the next couple of months. I'll believe that when I see it.
I like my S 4 pretty well. It's still strange getting used to Touch Whiz after Sense. I moved to the S 4 after having the original Evo and then the Evo 3D. I'm looking forward to rooting and being able to run custom ROMS on my S 4.
smarcin said:
I'm taking a chance on sounding silly, but that's just the way it is on CDMA networks. You can only do one or the other on 3G: voice or data. Being able to use voice and data simultaneously is a perk of 4G, LTE or wifi. Of course, if you have no LTE available where you are, or no wifi, it's voice or data. I know it's frustrating. I live in Minneapolis, Uptown area. We never did get very good Wimax at our house, especially indoors.
...
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That's not exactly accurate. Some phones can do simultaneous CDMA voice and data. However, it requires extra complexity in the phone (what's called "multiple paths") and with Sprint going to LTE, they decided to put a separate transmit path in the device just for LTE (and Wi-Fi).
smarcin said:
I'm taking a chance on sounding silly, but that's just the way it is on CDMA networks. You can only do one or the other on 3G: voice or data. Being able to use voice and data simultaneously is a perk of 4G, LTE or wifi. Of course, if you have no LTE available where you are, or no wifi, it's voice or data. I know it's frustrating. I live in Minneapolis, Uptown area. We never did get very good Wimax at our house, especially indoors.
When the LTE phones came out, I was in no hurry to upgrade, as there was no LTE anywhere in the Twin Cities. No one could hazard a guess as to when it would be rolled out. The Evo LTE has been out for almost a year, and LTE is finally becoming available. It's still pretty spotty, though. The good thing is, even with a weak signal at my house, I still can get nearly 5000kbps down inside my house. That's a lot better than 3G for sure! Sprint is saying we'll have LTE pretty much throughout the city in the next couple of months. I'll believe that when I see it.
I like my S 4 pretty well. It's still strange getting used to Touch Whiz after Sense. I moved to the S 4 after having the original Evo and then the Evo 3D. I'm looking forward to rooting and being able to run custom ROMS on my S 4.
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There's no harm in sounding silly. :silly: We forgive you.
The Sprint S3 and Evo 4G LTE both do it, it's called SVDO, simultaneous voice and EVDO 3G data (and ofcourse simultaneous voice and LTE and or WiFi).
For some reason, Sprint decided to fore-go SVDO on LTE phones after those two (S3 and Evo 4G LTE) and instead focus on SVLTE. To be fair, in all the years i've been with Sprint (13) i never thought i would ever need or use that feature until i got the S3. The first time i unknowingly used it i didn't even realize that while on a call, i was playing WordFeud multiplayer. It's something i do all the time now, and definitely sad to see it gone on the newer phones.
As their LTE network gets more robust and mature, it won't be much of an issue, but as of now 3G is in more places than their LTE network is. So...
LordLugard said:
There's no harm in sounding silly. :silly: We forgive you.
The Sprint S3 and Evo 4G LTE both do it, it's called SVDO, simultaneous voice and EVDO 3G data (and ofcourse simultaneous voice and LTE and or WiFi).
For some reason, Sprint decided to fore-go SVDO on LTE phones after those two (S3 and Evo 4G LTE) and instead focus on SVLTE. To be fair, in all the years i've been with Sprint (13) i never thought i would ever need or use that feature until i got the S3. The first time i unknowingly used it i didn't even realize that while on a call, i was playing WordFeud multiplayer. It's something i do all the time now, and definitely sad to see it gone on the newer phones.
As their LTE network gets more robust and mature, it won't be much of an issue, but as of now 3G is in more places than their LTE network is. So...
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Thanks to both you guys for setting me straight. I was parroting what I'd always heard from the OG Evo (which I had) and then the 3D, which I just left. Of course, you couldn't do SVDO on either. On the 3D, though, you could do a call + data if on 4G (Wimax), which was and still is, pretty spotty here in Minneapolis-St Paul. Of course, Sprint has been rolling out LTE for a while now. It appears, then disappears a lot. Unfortunately 3G has been awful for months. I will be so thankful when LTE is finally and fully deployed!
No problem, welcome. We are all here to help and learn from each other along the way. :good:
smarcin said:
Thanks to both you guys for setting me straight. I was parroting what I'd always heard from the OG Evo (which I had) and then the 3D, which I just left. Of course, you couldn't do SVDO on either. On the 3D, though, you could do a call + data if on 4G (Wimax), which was and still is, pretty spotty here in Minneapolis-St Paul. Of course, Sprint has been rolling out LTE for a while now. It appears, then disappears a lot. Unfortunately 3G has been awful for months. I will be so thankful when LTE is finally and fully deployed!
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Those devices did not support SVDO. I know the S3 and EVO LTE support it, and possible the Nexus LTE (additionally, the newest Optimus maybe?). I really liked this feature when on the phone and being able to quickly check email or pull up traffic info without relying on WiFi.
The S4 does not support simultaneous voice+data, and I believe that anandtech/ars had good articles describing the data paths employed by the HTC One and S4.
What I found interesting is that when the 4G connection drops out and 3G connects, I can just send a text and get 4G back immediately instead of waiting to hop towers. I suspect that a phone call would serve the same purpose.
Also, toggling 4G off and on will get you back the same mobile IP address. This is not the case with 3G, which results in a new IP address being assigned. In order to get a new IP on LTE, you have to toggle airplane mode (which is likely why this is the first step in troubleshooting LTE connectivity).
Thought I'd help you all out to understand it since you all are sooooo new to having LTE on your phones and all (that was a joke, don't get bent out of shape over it....)
The LTE standard only supports packet switching with its all-IP network. Voice calls in GSM, UMTS and CDMA2000 are circuit switched, so with the adoption of LTE, carriers will have to re-engineer their voice call network. Three different approaches sprang up. Most major backers of LTE preferred and promoted VoLTE (Voice over LTE, an implementation of IP Multimedia Subsystem or IMS) from the beginning. The lack of software support in initial LTE devices as well as core network devices however led to a number of carriers promoting VoLGA (Voice over LTE Generic Access) as an interim solution.[13] The idea was to use the same principles as GAN (Generic Access Network, also known as UMA or Unlicensed Mobile Access), which defines the protocols through which a mobile handset can perform voice calls over a customer's private Internet connection, usually over wireless LAN. VoLGA however never gained much support, because VoLTE (IMS) promises much more flexible services, albeit at the cost of having to upgrade the entire voice call infrastructure. While the industry has seemingly standardized on VoLTE for the future, the demand for voice calls today has led LTE carriers to introduce CSFB (Circuit Switched Fallback) as a stopgap measure. When placing or receiving a voice call, LTE handsets will fall back to old 2G or 3G networks for the duration of the call.
Source
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Just to be a bit more clear, it was not a sprint decision it is based on Qualcomm's chip design. The s4 krait simply supported svdo out the box and the snapdragon 600 doesn't.
themuffinman said:
Just to be a bit more clear, it was not a sprint decision it is based on Qualcomm's chip design. The s4 krait simply supported svdo out the box and the snapdragon 600 doesn't.
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I am not sure that is correct. First of all, the 600 is the CPU, not the modem - which is a separate component altogether. Secondly, I believe SVDO support is more a factor of the front end RF design being set up to feed multiple transmit paths to the modem, which in the case of the Qualcomm modem, I believe has the necessary additional ports to handle it. However, it would have necessitated a more complex RF design which Sprint and Samsung probably opted to forgo, given that Sprint's is already getting on the LTE bandwagon.
myphone12345 said:
I am not sure that is correct. First of all, the 600 is the CPU, not the modem - which is a separate component altogether. Secondly, I believe SVDO support is more a factor of the front end RF design being set up to feed multiple paths to the modem, which in the case of the Qualcomm modem, I believe has the necessary additional ports to handle it. However, it would have necessitated a more complex RF design which Sprint and Samsung probably opted to forgo, given that Sprint's is already getting on the LTE bandwagon.
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You are absolutely correct but wouldn't that be dependent on whether the modem supported that design?
themuffinman said:
You are absolutely correct but wouldn't that be dependent on whether the modem supported that design?
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My best guess is that the advanced modem in the S4 could handle it, but to add it on top of SVLTE along with the newer MIMO antenna configurations and multi-band transceivers and switches found in the latest LTE capable handsets would require the addition of another RF chain in the device and thus significantly raise the complexity of the design to a degree that doesn't make it worthwhile for Samsung to implement it.
It's not going to happen.... It's a USA cdma limitation it has NOTHING to do with the phone
Sent from my GT-I9505 using xda premium
hyelton said:
It's not going to happen.... It's a USA cdma limitation it has NOTHING to do with the phone
Sent from my GT-I9505 using xda premium
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Yes, for the most part, cdma devices has never been able to do voice and 3g data simultaneously but there is something called svdo which allows supported devices to do just that. The HTC thunderbolt on verizon was one of the first phones to support svdo(simultaneous voice and data over 3g on a cdma network). Getting it to work has absolutely nothing to do with the network but how the phone is designed. Now I am a sprint customer so I don't know what other devices supported it on verizon since but I do know that both sprint and verizon's gs3 both support svdo as well as sprints evo lte and a few other devices.
hyelton said:
It's not going to happen.... It's a USA cdma limitation it has NOTHING to do with the phone
Sent from my GT-I9505 using xda premium
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Not true. There have been several devices that could do it.
myphone12345 said:
Not true. There have been several devices that could do it.
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Oh theres plenty!! of devices that support it!! Its the NETWORK that does not.
hyelton said:
Oh theres plenty!! of devices that support it!! Its the NETWORK that does not.
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You keep talking like the network is preventing it from being possible, yes there are technical obsticals but obviously there are ways around it. So the botton line is, can you have a phone thats on a cdma network that can do voice and 3g data at the same time? That answer is yes
Seriously, why are we arguing this much about this? Simultaneous voice AND 3G on Sprint, yes, period. S3 and Evo LTE do it, S4 doesn't. Let's move on to other things.