[Q] Galaxy S5 Active on T-Mobile - Galaxy S 5 Q&A, Help & Troubleshooting

T-Mobile uses the 1700MHz and 2100MHz frequencies for 4G LTE data, and the Galaxy S5 Active supports 1700 and 2100, according to GSMArena.
1) Why then is the phone listed everywhere as "For AT&T"?
2) If I buy an S5 Active without a contract, how will data work on T-Mobile? 3G? 4G? 4G LTE?

dandv said:
how will data work on T-Mobile? 3G? 4G? 4G LTE?
Click to expand...
Click to collapse
Any given S5 model has the hardware capability to operate on all of the GSM and LTE bands. But Samsung can sell more phones, and carriers can deter you from jumping ship too readily by marketing lots of different S5 models that have various incompatibilities.
The S5 Active or SM-G870ADGEATT is a ruggedized variant, exclusive to ATT. So why is it said to be for ATT? Marketing.
As to compatibility with TMobile, assuming that you SIM unlock it, it can operate on most of the TMB bands. But again ATT has put a lot of thought into how to discourage you from moving to a different carrier. To wit, they have omitted support for TMB's 3G 1700 and LTE band 8.
You'd have to find out how widely TMB uses those bands to know if that would be a large impact on data use or not.
.

dandv said:
T-Mobile uses the 1700MHz and 2100MHz frequencies for 4G LTE data, and the Galaxy S5 Active supports 1700 and 2100, according to GSMArena.
1) Why then is the phone listed everywhere as "For AT&T"?
2) If I buy an S5 Active without a contract, how will data work on T-Mobile? 3G? 4G? 4G LTE?
Click to expand...
Click to collapse
There was a rumor posted 2 months ago on the Android Community that a T-Mobile version of the Galaxy S5 Active (model SM-G870T vs the AT&T model SM-G870A) would be out in late July. Here's a link.
http://androidcommunity.com/samsung-galaxy-s5-active-availability-leaks-out-20140529/
Obviously it's late July now and we haven't seen it but I'm wondering if AT&T got an exclusive on the Galaxy S5 Active for a few months and T-Mobile will release it after the exclusivity period expires.

fffft said:
Any given S5 model has the hardware capability to operate on all of the GSM and LTE bands. But Samsung can sell more phones, and carriers can deter you from jumping ship too readily by marketing lots of different S5 models that have various incompatibilities.
The S5 Active or SM-G870ADGEATT is a ruggedized variant, exclusive to ATT. So why is it said to be for ATT? Marketing.
As to compatibility with TMobile, assuming that you SIM unlock it, it can operate on most of the TMB bands. But again ATT has put a lot of thought into how to discourage you from moving to a different carrier. To wit, they have omitted support for TMB's 3G 1700 and LTE band 8.
You'd have to find out how widely TMB uses those bands to know if that would be a large impact on data use or not.
.
Click to expand...
Click to collapse
Sorry to dredge up an old topic, however you mentioned that the S5 active has the hardware capability to support all TMB bands, 1700 included, but then say "To wit, they have omitted support for TMB'S 3G 1700 and LTE band 8". Does this just mean the stock AT&T ROM is the only limiting factor? So, were I to flash the AT&T stock ROM and install a Tmobile ROM for example I could then utilize ALL of Tmobile ' 3G and LTE bands? (And wifi calling to boot).
Thanks

S5 Active is pretty limited on Tmobile network
"Sorry to dredge up an old topic, however you mentioned that the S5 active has the hardware capability to support all TMB bands, 1700 included, but then say "To wit, they have omitted support for TMB'S 3G 1700 and LTE band 8". Does this just mean the stock AT&T ROM is the only limiting factor? So, were I to flash the AT&T stock ROM and install a Tmobile ROM for example I could then utilize ALL of Tmobile ' 3G and LTE bands? (And wifi calling to boot).
Thanks"
I NEED to do something with my S5 Active to get it working better on Tmobile. I love the S5A... its a perfect phone for me. Not too big, but big enough. Rugged, waterproof, good camera, uSD card, etc. Without WiFi Calling and support for all of Tmo's freq & channels, its severely limiting.
I'd pay someone to help me convert my phone to Tmobiles stock S5 5.1.1 ROM and baseband radio firmware.
Help!
Jim

Also having the same problem with an unlocked S5 Active originally setup for AT&T. It uses the EDGE network only.
Has anyone successfully modified the phone to utilize the TMB 1700 band or the LTE band 8 as mentioned in this post? (either through ROM upgrade or other)?

I love the S5 Active, but using it with T-Mobile is such a hassle. I have the $30/mo. prepaid plan that includes unlimited text and data, so I'm not changing carriers anytime soon, but I have to buy new phones outright. When I bought this for myself last December, I saw it was compatible with T-Mobile so I pulled the trigger - a mistake in retrospect.
I'm from a large metro-area but T-Mobile's 4G signal is nearly impossible to get with this phone. Aside from never being able to connect to the internet when out of my apartment, sending/receiving MMS texts are a chore. I also discovered today that my android OS with this phone hasn't updated itself since I bought it - it's still running 4.4.2 and when I try to check for updates to Android through my device settings, it tells me AT&T has no new available updates at this time (there have in fact been 3 new updates AT&T released during this time).
So while I really love the phone, I'm going to have to sell it and look for a new device that's actually compatible with T-Mobile's network.

The Fix
I would go in the VPN settings and manually reset the ports and frequencies the phone reads and when it reads the T-Mobile sim card that it reads upon boot up.
Now, I'm running similar set up with Samsung Galaxy S4 & S5 (At&T variants), it seems like it works, have tried it on friend's S5 Active and it works perfectly.
The only problem is that you won't get to enjoy the freedom of wifi calling even though u have T-Mobile sim card and service, But at least u will be guaranteed to use T-Mobile 4G LTE speed and signals. Occassionally, T-Mobile will blackout or a region without T-Mobile and automatically the phone will roam with no charge and use AT&T signals for up to 15 minutes or depending to circumstances of the situation.
---------- Post added at 05:07 PM ---------- Previous post was at 05:04 PM ----------
ActiveS5 said:
I love the S5 Active, but using it with T-Mobile is such a hassle. I have the $30/mo. prepaid plan that includes unlimited text and data, so I'm not changing carriers anytime soon, but I have to buy new phones outright. When I bought this for myself last December, I saw it was compatible with T-Mobile so I pulled the trigger - a mistake in retrospect.
I'm from a large metro-area but T-Mobile's 4G signal is nearly impossible to get with this phone. Aside from never being able to connect to the internet when out of my apartment, sending/receiving MMS texts are a chore. I also discovered today that my android OS with this phone hasn't updated itself since I bought it - it's still running 4.4.2 and when I try to check for updates to Android through my device settings, it tells me AT&T has no new available updates at this time (there have in fact been 3 new updates AT&T released during this time).
So while I really love the phone, I'm going to have to sell it and look for a new device that's actually compatible with T-Mobile's network.
Click to expand...
Click to collapse
To get the At&T updates, I would advise you to go to Ebay and buy a prepaid At&t sim card for the phone and use it temporarily just to update it all the up to 5.1 Android OS and your phone will be running up to date. (cost anywhere from $3.99 to $15.99)

rossionQ!va said:
I would go in the VPN settings and manually reset the ports and frequencies the phone reads and when it reads the T-Mobile sim card that it reads upon boot up.
Now, I'm running similar set up with Samsung Galaxy S4 & S5 (At&T variants), it seems like it works, have tried it on friend's S5 Active and it works perfectly.
The only problem is that you won't get to enjoy the freedom of wifi calling even though u have T-Mobile sim card and service, But at least u will be guaranteed to use T-Mobile 4G LTE speed and signals. Occassionally, T-Mobile will blackout or a region without T-Mobile and automatically the phone will roam with no charge and use AT&T signals for up to 15 minutes or depending to circumstances of the situation.
---------- Post added at 05:07 PM ---------- Previous post was at 05:04 PM ----------
To get the At&T updates, I would advise you to go to Ebay and buy a prepaid At&t sim card for the phone and use it temporarily just to update it all the up to 5.1 Android OS and your phone will be running up to date. (cost anywhere from $3.99 to $15.99)
Click to expand...
Click to collapse
I got the AT&T updates by going into a Best Buy where they have a Samsung Experience center, took about 10 minutes but they updated my phone. I'll have to look into the VPN settings and see if there's anything I can do, but after purchasing the phone online I did have the folks at a T-Mobile store set the phone up for me so I would've figured they would have set it up proper.

Thinking of going to TMobile
ActiveS5 said:
I got the AT&T updates by going into a Best Buy where they have a Samsung Experience center, took about 10 minutes but they updated my phone. I'll have to look into the VPN settings and see if there's anything I can do, but after purchasing the phone online I did have the folks at a T-Mobile store set the phone up for me so I would've figured they would have set it up proper.
Click to expand...
Click to collapse
I have a S5 Active and I was considering making the jump to TMo, but I really would like the functionality of the wi-fi calling and text, since I work in a hospital and can get no reception or texts. Pardon me if this is a dumb question as I have no experience in jumping carriers with rooted phones, but would I get the features if I had the TMo sim, applied the TMo APN's, flashed a TMo stock or custom rom that has the features baked in? Would I just flash the 870a kernel to make it work? Anybody that has any ideas, I would love to hear them. Thanks

I'm on T-Mobile, would it be worth getting the S5 Active? I currently have the S4 Active.

Related

Tmobile Version has AT&T LTE support, and unlocked bootloader?

So far it looks like the Tmobile S4 has LTE/HSPA+ support for AT&T, and no real signs of a locked bootloader. Anyone else plan on buying that version and unlocking it if the bootloader is in fact unlocked?
Does anyone know of any apps that would test the LTE/HSPA+ bands the phone is capable of? I want to go into a Tmobile and use a test unit to see if I can get service with my LTE AT&T SIM.
https://explore.t-mobile.com/samsung-galaxy-s4
Edit: Well, it looks like I'll be getting the Tmobile variant unsubsidized and use it on AT&T. Tmobile will unlock the phone if you pay the total cost up front. I just need to find a replacement back cover to rid myself of the stupid Tmobile logo on the back... lol.
xxhorseriderxxx said:
So far it looks like the Tmobile S4 has LTE/HSPA+ support for AT&T, and no real signs of a locked bootloader. Anyone else plan on buying that version and unlocking it if the bootloader is in fact unlocked?
Does anyone know of any apps that would test the LTE/HSPA+ bands the phone is capable of? I want to go into a Tmobile and use a test unit to see if I can get service with my LTE AT&T SIM.
https://explore.t-mobile.com/samsung-galaxy-s4
Click to expand...
Click to collapse
If I had the money to buy the S4 outright for full price, I would just get an i9505.
EDIT: Spoke too soon. The i9505 doesn't support AT&T's LTE bands.
Can you post info on the source? I was also curious about this but i was thinking if we changed the radios like they did in the past that maybe we could get something working?
XsMagical said:
Can you post info on the source? I was also curious about this but i was thinking if we changed the radios like they did in the past that maybe we could get something working?
Click to expand...
Click to collapse
I put the info in the OP that I have so far; the LTE/3G radios are reported to support all of AT&T's bands. The bootloader, I'm going off of a guess since I don't think that Tmobile could afford to bribe Samsung to lock their bootloaders for them.
HMM, ok thanks for the info so far. I might have to go out and pick one up and test it.
Looks like the T-Mobile version has all the same bands and some extra ones added in. For instance the at&t only has lte bands 4&17. The tmobile version has LTE bands 1,2,4,5,7&17. Will T-Mobile unlock their phones for u??
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
I dnot know t mobile has att lte but i am using att phone with t mobile sim in it and i am getting 12-15 Mbps speed.
http://forum.xda-developers.com/showpost.php?p=40888195&postcount=46
T-Mobile:
HSPA+ Bands: I (UMTS 2100), II (1900), IV (1700/2100/AWS), V (850)
LTE Bands: Band 1 (2100), 2 (1900), 4 (1700/2100), 5(850), 7 (2600) & 17
GSM Bands: 850, 900, 1800, 1900
Rogers - Applies for Bell and Telus:
GSM Bands:850/900/1800/1900
HSPA+/HSPA Bands:850/1900/2100
LTE Bands:2100/2600
AT&T:
4G-LTE Band 4 and 17
3G - UMTS 850/1900/2100MHz
GSM/GPRS/EDGE 850/900/1800/1900MHz
T-Mobile Bootloader Locked or Unlocked ?
xxhorseriderxxx said:
So far it looks like the Tmobile S4 has LTE/HSPA+ support for AT&T, and no real signs of a locked bootloader. Anyone else plan on buying that version and unlocking it if the bootloader is in fact unlocked?
Does anyone know of any apps that would test the LTE/HSPA+ bands the phone is capable of? I want to go into a Tmobile and use a test unit to see if I can get service with my LTE AT&T SIM.
https://explore.t-mobile.com/samsung-galaxy-s4
Click to expand...
Click to collapse
I'm feeling like a newbie today cause I have my new T-Mobile Galaxy S4 in front of me & still playing with new features after 3 hours.
Tell me how to check to see if bootloader is unlocked and I'll do it.
Also trying to remember where we go to unlock the developer tools. Only remember that it must be clicked 7 times?
Just remembered, Settings.About Device>Build Number <Click Build Number 7 times, back out and Developer options magically appears.
Now i can go into it and toggle USB debugging. Now I only feel 95% newbie.
Glenn
So .. How do I get TMoble 4G on my HTC One X
What do I have to do get off Edge and onto Tmobile 3g/4g. I have the unlocked HTC One X ... What apps are there, and what steps needs to be followed.
trvlpoet said:
What do I have to do get off Edge and onto Tmobile 3g/4g. I have the unlocked HTC One X ... What apps are there, and what steps needs to be followed.
Click to expand...
Click to collapse
Do you realize you are in the S4 forum?
weltwon said:
I'm feeling like a newbie today cause I have my new T-Mobile Galaxy S4 in front of me & still playing with new features after 3 hours.
Tell me how to check to see if bootloader is unlocked and I'll do it.
Also trying to remember where we go to unlock the developer tools. Only remember that it must be clicked 7 times?
Just remembered, Settings.About Device>Build Number <Click Build Number 7 times, back out and Developer options magically appears.
Now i can go into it and toggle USB debugging. Now I only feel 95% newbie.
Glenn
Click to expand...
Click to collapse
you don't have to worry about checking the bootloader, it has already been confirmed to be unlocked
http://forum.xda-developers.com/showthread.php?t=2258476
I love this thread, i cant wait to get the Tmo version of the S4 and return this locked down model.
Stroked from my Dirty Nocturnal'd Galaxy S4
scott14719 said:
Do you realize you are in the S4 forum?
Click to expand...
Click to collapse
Oh ... thanx... fustration!!!!
Has anybody tried their T-Mobile phone on AT&T yet?
If so, I have a couple of questions.
1. Can you use the T-Mobile phone to wireless tether (become a wifi hotspot) on AT&T's network? The AT&T version can be used to tether (with a simple hack). I was just wondering if a different .APK would be needed to do the same with the T-Mobile phone on AT&T's network or if the T-Mobile phone already has an APK installed that works on AT&T's network?
2. I realize an existing AT&T sim card can just simply be placed into the sim unlocked T-Mobile phone for it to work, but how would I go about changing the imei and other phone info that AT&T has in their system about the phone? In other words, would AT&T cause problems with anyone using a T-Mobile phone on their network even if the person paid full price for the phone and it is unlocked? Would it be better to have them change the system information at a store versus over the telephone?
3. It is reported that the T-Mobile phone works fine on AT&T's LTE network, has anyone verified this and does the phone show LTE when on AT&T's LTE network?
Thank you for any replies. Hopefully this information can help people decide if they want to buy the T-Mobile S4 to use on AT&T or not.
scott14719 said:
Has anybody tried their T-Mobile phone on AT&T yet?
If so, I have a couple of questions.
1. Can you use the T-Mobile phone to wireless tether (become a wifi hotspot) on AT&T's network? The AT&T version can be used to tether (with a simple hack). I was just wondering if a different .APK would be needed to do the same with the T-Mobile phone on AT&T's network or if the T-Mobile phone already has an APK installed that works on AT&T's network?
2. I realize an existing AT&T sim card can just simply be placed into the sim unlocked T-Mobile phone for it to work, but how would I go about changing the imei and other phone info that AT&T has in their system about the phone? In other words, would AT&T cause problems with anyone using a T-Mobile phone on their network even if the person paid full price for the phone and it is unlocked? Would it be better to have them change the system information at a store versus over the telephone?
3. It is reported that the T-Mobile phone works fine on AT&T's LTE network, has anyone verified this and does the phone show LTE when on AT&T's LTE network?
Thank you for any replies. Hopefully this information can help people decide if they want to buy the T-Mobile S4 to use on AT&T or not.
Click to expand...
Click to collapse
You can, for now, use PDAnet for tethering.
As far as changing the phone to appear as "unknown" to AT&T's system, don't do it without a backup of your /efs folder. I don't recommend doing it either because it's not really worth changing things around to hide that you're on a Tmobile phone, because for the most part, they don't care as long as you're paying them your monthly bill. I personally know a friend who has used her unlocked HTC Amaze on AT&T without issue (she was stuck to 2G speeds). The only way for you to have an "unknown" phone on your account is to use an international model phone such as the HTC one or the i9500 (unconfirmed that the i9300/i9500 model is entered into AT&T's system, I only hèard a rumour that AT&T has the IMEI of those phones in its system). My i9100 currently shows up as "unknown" in my bill statement.
I took a screenshot, but I don't have a link of the LTE working conformation (attached). I won't be getting my phone until I am on holiday in New Hampshire so that I can avoid the sales tax on purchasing the Tmobile variant. I would ask my parents to buy it for me, and I send them the money, but they have no technological skills whatsoëver close to asking/knowing what to ask for at the Tmobile store. Sorry guys, lol.
my t mobile m919 stock mdl rooted..tetheting works out of the box SN at&t and on their system it doesn't know what kind of phone I have...
Sent from my SGS 4

Is Verizon S5 unlocked? Can it be used on T-Mobile?

Hey guys. Is the Verizon S5 CDMA + GSM?
Is it factory unlocked?
Can it be used on T-mobile with everything working correctly (LTE/4G)?
Thanks
nthydro said:
Hey guys. Is the Verizon S5 CDMA + GSM?
Is it factory unlocked?
Can it be used on T-mobile with everything working correctly (LTE/4G)?
Thanks
Click to expand...
Click to collapse
I don't know the answer to your question but I can confirm that the Galaxy S5 that I received from TMobile was in fact LOCKED.
I called the support # and was told that I had to have service and use it for 40 days before it could be unlocked.
I PAID THE FULL PRICE ($720 with tax)!!!
I asked to speak with a supervisor -- after 10 minutes on hold -- no change.
I told the store that I was going to bring it back because I didn't pay $700 for a locked phone. Everyone has been nice but it's locked for policy issues and not for technical reasons. I flew to Canada when I bought my iPhone4.
And, AT&T is worse -- one guy told me 3 months and tech support said it had to be active for 6 months.
>> So, my AT&T sim card is not working in my SM-G900T model.
It is GSM/LTE unlocked (as are all Verizon LTE devices), but I'm pretty sure it doesn't have T-Mobile's LTE bands (or at the very least it doesn't have all of their bands).
From what I have been reading, on a Verizon phone, calls and data using GSM and WCDMA bands would work. But LTE bands are Verizon specific hence would not work.
Tl; Dr Voice /data using GSM/WCDMA. No LTE.
Sent from my Nexus 4 using Tapatalk
---------- Post added at 07:30 AM ---------- Previous post was at 07:26 AM ----------
alex_tytn said:
I don't know the answer to your question but I can confirm that the Galaxy S5 that I received from TMobile was in fact LOCKED.
I called the support # and was told that I had to have service and use it for 40 days before it could be unlocked.
I PAID THE FULL PRICE ($720 with tax)!!!
I asked to speak with a supervisor -- after 10 minutes on hold -- no change.
I told the store that I was going to bring it back because I didn't pay $700 for a locked phone. Everyone has been nice but it's locked for policy issues and not for technical reasons. I flew to Canada when I bought my iPhone4.
And, AT&T is worse -- one guy told me 3 months and tech support said it had to be active for 6 months.
>> So, my AT&T sim card is not working in my SM-G900T model.
Click to expand...
Click to collapse
Does this mean, once unlocked, T-Mobile and AT&T versions would work on each other's networks including LTE?
I also noticed that with S5, there aren't GSM carrier specific versions. Meaning they are going IPhone route with making all GSM phones enabled that for that country's LTE bands. Is that right reading?
Sent from my Nexus 4 using Tapatalk
it is unlocked
I am using the verizon s5 on tmobile. It is unlocked and can be used on tmobile LTE. However there are only set modes. LTE/CDMA GSM/UMTS AND GLOBAL. Which means you can't use lte and gsm at the same time (no lte data and voice calls). I usually keep it on gsm, and when I need speedy data I switch it to lte.
alex_tytn said:
I don't know the answer to your question but I can confirm that the Galaxy S5 that I received from TMobile was in fact LOCKED.
I called the support # and was told that I had to have service and use it for 40 days before it could be unlocked.
I PAID THE FULL PRICE ($720 with tax)!!!
I asked to speak with a supervisor -- after 10 minutes on hold -- no change.
I told the store that I was going to bring it back because I didn't pay $700 for a locked phone. Everyone has been nice but it's locked for policy issues and not for technical reasons. I flew to Canada when I bought my iPhone4.
And, AT&T is worse -- one guy told me 3 months and tech support said it had to be active for 6 months.
>> So, my AT&T sim card is not working in my SM-G900T model.
Click to expand...
Click to collapse
T-Mobile isn't locked.
Sent from my SM-G900T
drworsley said:
I am using the verizon s5 on tmobile. It is unlocked and can be used on tmobile LTE. However there are only set modes. LTE/CDMA GSM/UMTS AND GLOBAL. Which means you can't use lte and gsm at the same time (no lte data and voice calls). I usually keep it on gsm, and when I need speedy data I switch it to lte.
Click to expand...
Click to collapse
How? If you put a TMobile SIM in the phone, or any other foreign SIM, it boots but receives no service. This is in line with almost all other Verizon branded phones (excluding Apple) -- where the phone works (unlocked) outside the US, but won't roam to ATT/TMo in the US.
Pictures please. For the record, my S5 doesn't register on a network with a TMobile or Australian SIM. The Australian SIM in a Nexus 5 roams to TMobile.
-- Dan
Cpudan80 said:
How? If you put a TMobile SIM in the phone, or any other foreign SIM, it boots but receives no service. This is in line with almost all other Verizon branded phones (excluding Apple) -- where the phone works (unlocked) outside the US, but won't roam to ATT/TMo in the US.
Pictures please. For the record, my S5 doesn't register on a network with a TMobile or Australian SIM. The Australian SIM in a Nexus 5 roams to TMobile.
-- Dan
Click to expand...
Click to collapse
This was probably true about a year ago but the recent releases from Verizon, e.g. iPhone 5/5s and galaxy s4 has been fully unlocked world phones. I'm sure there are a few other phones... I think lg g2? I'm not exactly sure. But I have personally stuck my sim(T-Mobile) into my friend's Verizon phones (s4 and iPhone 5s) and they work right away after a reboot. Only problem might be an edit in APN for data and mms. Just sharing my experience, you should check out your phones again.
Teo032 said:
This was probably true about a year ago but the recent releases from Verizon, e.g. iPhone 5/5s and galaxy s4 has been fully unlocked world phones. I'm sure there are a few other phones... I think lg g2? I'm not exactly sure. But I have personally stuck my sim(T-Mobile) into my friend's Verizon phones (s4 and iPhone 5s) and they work right away after a reboot. Only problem might be an edit in APN for data and mms. Just sharing my experience, you should check out your phones again.
Click to expand...
Click to collapse
Not trying to be a jerk, but unless you tried this process in the actual phone in question, then you don't really know if it works. The phone DOES NOT just magically work on TMobile if you put a SIM in, you receive NO service. Now, I didn't go mess around with APNs -- typically those are only for MMS/Data. This is also true for several other phones:
Razr HD / Maxx HD
Galaxy S3
In the past, when the phones were SIM locked, a foreign SIM would prompt for an unlock code before the phone even booted into "normal" Android. That's not the case here -- because the phone is not SIM locked -- but I do believe it is network locked to VZW only when in the US.
For the record, I did try this in my S5. I will be going to Australia next week and will try a Telstra (or perhaps Optus) SIM over there to see what happens.
-- Dan
Cpudan80 said:
Not trying to be a jerk, but unless you tried this process in the actual phone in question, then you don't really know if it works. The phone DOES NOT just magically work on TMobile if you put a SIM in, you receive NO service. Now, I didn't go mess around with APNs -- typically those are only for MMS/Data. This is also true for several other phones:
Razr HD / Maxx HD
Galaxy S3
In the past, when the phones were SIM locked, a foreign SIM would prompt for an unlock code before the phone even booted into "normal" Android. That's not the case here -- because the phone is not SIM locked -- but I do believe it is network locked to VZW only when in the US.
For the record, I did try this in my S5. I will be going to Australia next week and will try a Telstra (or perhaps Optus) SIM over there to see what happens.
-- Dan
Click to expand...
Click to collapse
Yes, I haven't tried it on the s5, but I was pointing out fact that it does work on recent releases which someone confirmed worked on s5 by just plugging it in. I'm also correcting your statement " This is in line with almost all other Verizon branded phones (excluding Apple) -- where the phone works (unlocked) outside the US, but won't roam to ATT/TMo in the US." because Verizon apple does work in the US on T-Mobile and AT&T beginning from iPhone 5. I believe the 4s was still carrier locked.
I was a wireless agent not to long ago, so I know how these things work, not that it magically just works... I'm just sharing you how some recent releases from Verizon has been world unlocked and a few others have mentioned that they just plugged it in and it worked. So good luck and have fun in Australia.
Teo032 said:
Yes, I haven't tried it on the s5, but I was pointing out fact that it does work on recent releases which someone confirmed worked on s5 by just plugging it in. I'm also correcting your statement " This is in line with almost all other Verizon branded phones (excluding Apple) -- where the phone works (unlocked) outside the US, but won't roam to ATT/TMo in the US." because Verizon apple does work in the US on T-Mobile and AT&T beginning from iPhone 5. I believe the 4s was still carrier locked.
I was a wireless agent not to long ago, so I know how these things work, not that it magically just works... I'm just sharing you how some recent releases from Verizon has been world unlocked and a few others have mentioned that they just plugged it in and it worked. So good luck and have fun in Australia.
Click to expand...
Click to collapse
OK Thanks.
It is odd that the apple phones -- and some of the Android phones -- are totally unlocked so that you can use them on ATT/TMobile in the US -- but some (like the S5, apparently) are not. I still am interested to know how some of the other users in this thread got their S5s working on TMobile...
Why would anyone want to buy a Verizon GS5 and use it on T-Mobile? The bootloader is locked and there is currently no unlock method available.
Would you like to exchange?
Would you like to exchange your verizon s5 with my tmobile s5?
i wanted to use it for verizon but the phone is locked to tmobile and at&t.
It would be ideol if i can find someone to exchange it with someone who has a verizon s5 and is looking for tmobile or at&t s5.
thanks,
sy3dal29 said:
Would you like to exchange your verizon s5 with my tmobile s5?
i wanted to use it for verizon but the phone is locked to tmobile and at&t.
It would be ideol if i can find someone to exchange it with someone who has a verizon s5 and is looking for tmobile or at&t s5.
thanks,
Click to expand...
Click to collapse
You could check out Swappa. There may be some people that are interested.
nthydro said:
Hey guys. Is the Verizon S5 CDMA + GSM?
Is it factory unlocked?
Can it be used on T-mobile with everything working correctly (LTE/4G)?
Thanks
Click to expand...
Click to collapse
I can confirm the Verizon GS5 is compatible with T-Mobiles LTE network I'm using one now with LTE all you have to do is go to settings mobile network and switch to Global mode some times you'll have to toggle LTE then back to global to get LTE to kick in.
I am able to successfully use my VZ Galaxy Note 3 and my wife uses her VZ Galaxy S5, both devices on T-mobile Edge, HSPA, HSPA+ (21mbps), and LTE (band 4) frequencies. These devices unfortunately will not do DC-HSPA+ (42mbps), but that's not a big deal for us because LTE coverage is good where we live. We have no issues with making voice calls, or sending SMS/MMS, and don't have to switch APN's or toggle between Global Mode or GSM/UMTS mode. We leave them on Global Mode with the correct APN settings.
Here's the guide I followed for both (with correct APN settings screenshots to accommodate for MMS on page 4 or 5 i believe):
http://forum.xda-developers.com/showthread.php?t=2582747
..
How
drworsley said:
I am using the verizon s5 on tmobile. It is unlocked and can be used on tmobile LTE. However there are only set modes. LTE/CDMA GSM/UMTS AND GLOBAL. Which means you can't use lte and gsm at the same time (no lte data and voice calls). I usually keep it on gsm, and when I need speedy data I switch it to lte.
Click to expand...
Click to collapse
How did you unlock the Verizon S5? BTW theres a bounty on doing so.
..
This is all new info to me. I have an AT&T galaxy S5 that I want to use on Verizon. Is it possible or do I need to trade for a Verizon-specific model?

Can I use a Tmobile Note 4 on AT&T and vice versa?

Can I use a Tmobile Note 4 on AT&T and vice versa and have it work with LTE?
In other words, is the Note 4 interchangeable with both Tmobile and AT&T LTE service?
Neo3D said:
Can I use a Tmobile Note 4 on AT&T and vice versa and have it work with LTE?
In other words, is the Note 4 interchangeable with both Tmobile and AT&T LTE service?
Click to expand...
Click to collapse
yes
Potentially, yes. You could do the reverse, so I can't see why it wouldn't work.
Sent from my HTC6525LVW using XDA Free mobile app
You guys are positive that LTE will still work on both networks?
Neo3D said:
You guys are positive that LTE will still work on both networks?
Click to expand...
Click to collapse
It's showing the same bands to it should work, no one will know until they actually test it. The Note 3 also had the same bands, but some anecdotal reports stated the reception was a bit worse and it didn't hang onto LTE as well. Nothing scientific, just users reporting this so make of it what you will. Personally my business can't take the chance of reception issues so I just bit the bullet and got the ATT version knowing I am saying goodbye to root. Once again this is unsubstantiated, it's just what I got from hours of looking at all the forum posts about using the Tmo Note 3 on ATT.
How about a Verizon Note 4 on AT&T? Verizon is charging almost $150 less for an off contract phone, however I have a mobile share plan with other AT&T phones on contract so I'd need to stay on AT&T if possible...
Is it possible to "unlock" (or whatever the term is) an AT&T phone to use with Tmobile?
I want to use AT&T mainly but when I'm traveling internationally, I want to be able to switch to Tmobile.
Neo3D said:
Is it possible to "unlock" (or whatever the term is) an AT&T phone to use with Tmobile?
I want to use AT&T mainly but when I'm traveling internationally, I want to be able to switch to Tmobile.
Click to expand...
Click to collapse
Yes you can and the term is "unlock". Just make sure the bands are compatible on your at&t phone with the Tmobile network.
daraj said:
Yes you can and the term is "unlock". Just make sure the bands are compatible on your at&t phone with the Tmobile network.
Click to expand...
Click to collapse
Thanks!
Well, that's what I want to know. Will LTE work on both networks with either or both Tmobile and at&t versions?
danmanca said:
How about a Verizon Note 4 on AT&T? Verizon is charging almost $150 less for an off contract phone, however I have a mobile share plan with other AT&T phones on contract so I'd need to stay on AT&T if possible...
Click to expand...
Click to collapse
I know you can use TMOBILE PHONES on ATT - I assume you can do the reverse -but I don't think you can run TMOBILE PHONES on Verizon - or Verizon PHones on TMOBILE - I say this because the roms created for Verizon were really never very compatible for Tmobile phones ( at least not for me on any of the roms I tried to flash - data didn't work - wifi didn't work - ) so I htink they have different kinds of radios - but I am not a developer so that is only a guess -
USE TMOBILE phone on ATT and you are fine
---------- Post added at 03:59 PM ---------- Previous post was at 03:57 PM ----------
Neo3D said:
Is it possible to "unlock" (or whatever the term is) an AT&T phone to use with Tmobile?
I want to use AT&T mainly but when I'm traveling internationally, I want to be able to switch to Tmobile.
Click to expand...
Click to collapse
Yes - as long as you manually add the APNS - but keep in mind the ATT PHONE will have a locked bootloader and it will probably be a while until someone finds a way to root the ATT PHONE - I say this based on what happened with the Note3 and S5 - I assume the same will be the case for ATT NOte 4s
If somebody takes an AT&T phone to T-Mobile, it will get fully functional LTE (as they both use band 4 aws). However, T-Mobile has built most of its 3G network on Band 4 UMTS / HSPA (AWS 1700/2100) which AT&T phones to not support. This coverage footprint is bigger than their current LTE network. The AT&T phone will get Band 2 (1900) UMTS / HSPA in the areas T-Mobile has refarmed.
A T-Mobile phone is fully compatible with AT&T. All T-Mobile phones support bands 2 and 5 for 3G (H+). T-Mobile phones also support AT&T's Band 17 for roaming reasons.
Be advised that if your using a T-Mobile device on AT&T (preferably an LTE device) it may not get the best reception, as AT&T optimizes their modems for their lower frequencies. Last year my T-Mobile Note 3 LTE reception was awful on AT&T. The T-Mobile S5 on AT&T was improved, but not as good as AT&T's own S5's reception.
MattMJB0188 said:
If somebody takes an AT&T phone to T-Mobile, it will get fully functional LTE (as they both use band 4 aws). However, T-Mobile has built most of its 3G network on Band 4 UMTS / HSPA (AWS 1700/2100) which AT&T phones to not support. This coverage footprint is bigger than their current LTE network. The AT&T phone will get Band 2 (1900) UMTS / HSPA in the areas T-Mobile has refarmed.
A T-Mobile phone is fully compatible with AT&T. All T-Mobile phones support bands 2 and 5 for 3G (H+). T-Mobile phones also support AT&T's Band 17 for roaming reasons.
Be advised that if your using a T-Mobile device on AT&T (preferably an LTE device) it may not get the best reception, as AT&T optimizes their modems for their lower frequencies. Last year my T-Mobile Note 3 LTE reception was awful on AT&T. The T-Mobile S5 on AT&T was improved, but not as good as AT&T's own S5's reception.
Click to expand...
Click to collapse
I am pretty sure I know the answer to this - but if the ATT modem is better for att users - if someone does have a TOMBILE PHONE - why is that we can't flash an ATT Modem on the TOMBILE Phone?
I realize there is a chance of 'brcking" but if the phones are so close to each other anyway - why can't you flash an ATT Modem on a TMOBILE phone? Anyone?.
mocsab said:
I am pretty sure I know the answer to this - but if the ATT modem is better for att users - if someone does have a TOMBILE PHONE - why is that we can't flash an ATT Modem on the TOMBILE Phone?
I realize there is a chance of 'brcking" but if the phones are so close to each other anyway - why can't you flash an ATT Modem on a TMOBILE phone? Anyone?.
Click to expand...
Click to collapse
I'm not sure. But a few years ago there was a guy from Canada using a Rogers device ( I think the S3?) anyway AT&T had just released an update for their S3 and it drastically improved signal strength and data speeds. He took it upon himself to flash only the modem from CWM. The phone rebooted and he had no IMEI number. Therefore his phone couldn't even connect to the network. I'm not sure how or if he resolved it. But that lesson right there made me never flash any carrier's modem on my device.
MattMJB0188 said:
I'm not sure. But a few years ago there was a guy from Canada using a Rogers device ( I think the S3?) anyway AT&T had just released an update for their S3 and it drastically improved signal strength and data speeds. He took it upon himself to flash only the modem from CWM. The phone rebooted and he had no IMEI number. Therefore his phone couldn't even connect to the network. I'm not sure how or if he resolved it. But that lesson right there made me never flash any carrier's modem on my device.
Click to expand...
Click to collapse
That would keep me away too - but it's too bad - as much a like as the variants are - it is too bad they are not more interchangeable

sm-g935f does it work with verizon ??

Can anyone tell me if this will work on verizon carrier ? Don't want the locked down verison
I'm pretty sure the International (GM935F) version does NOT support Verizon's CDMA.
Verizon and sprint are the only reason USA doesn't have the faster exynos processor.
Sent from my Star-Tac
Use the following site to check
http://willmyphonework.net
according to this site you should get 4g LTE, but does not work on 2G or 3G
full spec of samsung model is here
http://www.samsung.com/uk/business/business-products/smartphones/smartphones/SM-G935FZKABTU
also note the foot note at the bottom of the results from http://willmyphonework.net,
******
"How To Interpret The Results
When performing a search, you will be presented with three networks: 2G, 3G, and 4G LTE.
For the technical savvy, we have included the network frequencies that match between the mobile device and the network carrier. Also, we consider HSPA+ to be 3G.
Note: Will My Phone Work assumes that your device is unlocked or allowed to be run on the desired mobile network. Certain carriers such as Verizon USA have an "approved list" of devices. This means that although the phone is compatible with the carrier's network frequencies, the device is blocked. Also, some carriers make frequencies/bands available only to specific geographical regions."
********
Has anyone confirmed this?
5teve0 said:
Use the following site to check
http://willmyphonework.net
according to this site you should get 4g LTE, but does not work on 2G or 3G
full spec of samsung model is here
http://www.samsung.com/uk/business/business-products/smartphones/smartphones/SM-G935FZKABTU
also note the foot note at the bottom of the results from http://willmyphonework.net,
******
"How To Interpret The Results
When performing a search, you will be presented with three networks: 2G, 3G, and 4G LTE.
For the technical savvy, we have included the network frequencies that match between the mobile device and the network carrier. Also, we consider HSPA+ to be 3G.
Note: Will My Phone Work assumes that your device is unlocked or allowed to be run on the desired mobile network. Certain carriers such as Verizon USA have an "approved list" of devices. This means that although the phone is compatible with the carrier's network frequencies, the device is blocked. Also, some carriers make frequencies/bands available only to specific geographical regions."
********
Click to expand...
Click to collapse
I'm also interested in this. I'm thinking of buying a G935F so I can root and have complete control over the recovery and ROMs.
I assumed the international (global) variant would support everything. My Galaxy S5 works everywhere including the US and also drops to 3G if necessary on Verizon. The ultimate question is, if I buy a G935F, can I make/receive calls, texts/mms, and get data using a Verizon SIM card? If I'm in a fringe area and it drops 4G, what will happen? Will it just have no service? I have to think it would support 3G/2G. If a person from Europe comes to the US with the G935F and uses a verizon SIM or is in a verizon only area, they would be screwed.
Again, I would think it should just work, no?
It will not work on Verizon because
1. Verizon relies on using the outdated CDMA standard so you can't connect to their "3G" network.
2. Verizon uses non standard version of the VoLTE IMS (so does T-Mobile it seems), so you can't place calls over LTE even if you flash a VoLTE enabled firmware on your GS7
3. Verizon as a carrier is a control freak that doesn't let its costumers use devices that have not been "approved" by their services, therefore, your devices' IMEI have to be white-listed in order to connect to their network.
mathieulh said:
It will not work on Verizon because
1. Verizon relies on using the outdated CDMA standard so you can't connect to their "3G" network.
2. Verizon uses non standard version of the VoLTE IMS (so does T-Mobile it seems), so you can't place calls over LTE even if you flash a VoLTE enabled firmware on your GS7
3. Verizon as a carrier is a control freak that doesn't let its costumers use devices that have not been "approved" by their services, therefore, your devices' IMEI have to be white-listed in order to connect to their network.
Click to expand...
Click to collapse
Already started the process of moving to AT&T...waiting on my work to confirm it. I hope Verizon reads this. It would have been some much simpler if they just unlocked their bootloader and didn't put a ton of crap (bloat) on their stock ROM...then they would have retained this customer.
I was considering the G935FD (dual sim) since my personal phone is AT&T and my work phone is Verizon. I want to consolidate to a single phone. Honestly I only need Verizon for calls and text, not even data, since my AT&T is unlimited. Looks like the international S7 Edge support Verizon's primary LTE band 13 which would technically work for data, but won't connect to their CDMA calling network according to mathieulh.. Now here's the kicker.. the new ZTE Axon 7 is supposedly compatible with Sprint and Verizon, AND it's a dual SIM phone. I know Verizon has to give the final "okay" to have a device activate on their network, but looking at the specs between the Axon 7 and the G935FD (dual sim S7 Edge) on GSMArena, there are essentially NO DIFFERENCES between 2G/3G/4G(LTE) bands between the two devices. The only difference I really see is Cat 6 LTE (300/50Mbps) on the Axon 7 and Cat 9 LTE (450/50Mbps) on the S7 Edge.
Can anyone clear this up? ZTE is literally saying their Axon 7 will work on Verizon, with essentially the same network specs as the S7 Edge international... there MUST be some major defining issue with using the Exynos vs Qualcomm processor when it comes to CDMA connectivity, but I still can't see a spec difference online.
G930f won't work on Verizon
Hey guys so I see this last post is from almost 3 years ago but I like the s7 and I have verizon. I don't like the Verizon variant of the s7 and wanted to try this one, the g930f because it had the same bands for LTE that verizon uses. I thought I could just use Google voice and make calls with data. I've been messing around with it for a few days now and I'm using a pre-registered sim from a Motorola that I bought from Verizon. I cannot get it to register even with data alone. I've tried removing all AP names and then creating several different AP names using Verizon settings. It's a no-go. I'm getting the g930u.
Thank you for reading. Maybe you know a workaround?

How to enable GSM on GS7 (Smg930v)?

Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?
rawfa said:
Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?
Click to expand...
Click to collapse
It won't connect in Brazil because they are GSM-only; whereas VZW is a CDMA-only network. South America is like the EU - mostly,l if not entirely, GSM-only; VZW and Sprint are using different (and not cross-compatible) types of CDMA. Tracfone (and their Safelink lifeline division) is an MVNO that uses T-Mobile and VZW towers for coverage (and thus support both GSM and CDMA phones). Tracfone has both GSM and CDMA SIM kits - however, the SIM kit you purchase must match the target phone. (Some phones, such as the Galaxy Nexus, for example, are available in both sorts - maguro for AT&T Mobility and T-Mobile/Deutsch Telekom, and toro/toroplus for VZW and Sprint; there are even "unified" ROMs (the Tuna versions are neutral in this fashion, and are available from JB to N - PureNexus 7.1.1 for Tuna is my default, and is just one such example). It may be possible to modify the radios to support GSM bands; however, I would not recommend it.
rawfa said:
Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?
Click to expand...
Click to collapse
the phone is gsm unlocked out of the box
my s7 is Verizon on att
flash the unlocked firmware to further unlock all the bands but Verizon unlocks out of the box
---------- Post added at 07:49 AM ---------- Previous post was at 07:47 AM ----------
PGHammer said:
It won't connect in Brazil because they are GSM-only; whereas VZW is a CDMA-only network. South America is like the EU - mostly,l if not entirely, GSM-only; VZW and Sprint are using different (and not cross-compatible) types of CDMA. Tracfone (and their Safelink lifeline division) is an MVNO that uses T-Mobile and VZW towers for coverage (and thus support both GSM and CDMA phones). Tracfone has both GSM and CDMA SIM kits - however, the SIM kit you purchase must match the target phone. (Some phones, such as the Galaxy Nexus, for example, are available in both sorts - maguro for AT&T Mobility and T-Mobile/Deutsch Telekom, and toro/toroplus for VZW and Sprint; there are even "unified" ROMs (the Tuna versions are neutral in this fashion, and are available from JB to N - PureNexus 7.1.1 for Tuna is my default, and is just one such example). It may be possible to modify the radios to support GSM bands; however, I would not recommend it.
Click to expand...
Click to collapse
you do know that almost all Verizon phones now are unlocked out of the box no mods needed
the reason is some of the bands that gsm carriers are not supported by verzion
mine is a Verizon on att rite now no mods at all other than root and stuff
---------- Post added at 07:52 AM ---------- Previous post was at 07:49 AM ----------
rawfa said:
Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?
Click to expand...
Click to collapse
sorry for double posting kinda thing here
the reason its connecting to 4g there is the phone supports the 4g band obviously in brazil
but not some of the others I had this issue with my note 5 not supporting atts 4g band so I would get 2g and 3g but no 4g
again flash the g930u firmware and it seems to unlock all the bands
---------- Post added at 08:06 AM ---------- Previous post was at 07:52 AM ----------
rawfa said:
Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?
Click to expand...
Click to collapse
u might try in mobile networks to switch it to global instead of anything else
rawfa said:
Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?
Click to expand...
Click to collapse
You should be able to put in the GSM sim and set the APN to what the carrier recommends and it works. It may not support all of bands that that carrier uses but it should work. You could also flash the Verizon SM-930v to the firmware for the Unlocked SM-930u via Odin and unlock more of the GSM bands. Most like it is just a APN issue
PGHammer said:
It won't connect in Brazil because they are GSM-only; whereas VZW is a CDMA-only network. South America is like the EU - mostly,l if not entirely, GSM-only; VZW and Sprint are using different (and not cross-compatible) types of CDMA. Tracfone (and their Safelink lifeline division) is an MVNO that uses T-Mobile and VZW towers for coverage (and thus support both GSM and CDMA phones). Tracfone has both GSM and CDMA SIM kits - however, the SIM kit you purchase must match the target phone. (Some phones, such as the Galaxy Nexus, for example, are available in both sorts - maguro for AT&T Mobility and T-Mobile/Deutsch Telekom, and toro/toroplus for VZW and Sprint; there are even "unified" ROMs (the Tuna versions are neutral in this fashion, and are available from JB to N - PureNexus 7.1.1 for Tuna is my default, and is just one such example). It may be possible to modify the radios to support GSM bands; however, I would not recommend it.
Click to expand...
Click to collapse
You have no idea what you are talking about. All Verizon phones are sim unlocked and since the HTC Thunderbolt, they all support a lot but not all GSM bands. All newer Verizon phones are world phones and usually just need the proper APN of the Telecom being used. Again they do not support all GSM bands but the do cover a lot of them that are used internationally.
nrage23 said:
You should be able to put in the GSM sim and set the APN to what the carrier recommends and it works. It may not support all of bands that that carrier uses but it should work. You could also flash the Verizon SM-930v to the firmware for the Unlocked SM-930u via Odin and unlock more of the GSM bands. Most like it is just a APN issue
You have no idea what you are talking about. All Verizon phones are sim unlocked and since the HTC Thunderbolt, they all support a lot but not all GSM bands. All newer Verizon phones are world phones and usually just need the proper APN of the Telecom being used. Again they do not support all GSM bands but the do cover a lot of them that are used internationally.
Click to expand...
Click to collapse
I will second both of these post in every way. Lol. I was thinking it just tryin to keep to myself
Agreed. You could purchase the phone and flash the U firmware. That's what I have done. I have used my Verizon s7 on Att and TMobile through their mnvos respectively
To wrap up in a nutshell what everyone else was saying...
1) The G930V S7s have both CDMA and GSM radios, so will work on both types of network.
2) Verizon phones are NOT network locked.
3) You need to check the GSM frequencies for your local network. The G930V uses GSM 850/900/1800/1900 for 2G & UMTS 850/900/1900/2100 for 3G. If your local network doesn't use any of these bands, the phone won't work for calls/SMS.
4) Flashing the 'U' firmware will only add UMTS 1700. There used to be a way to get into the radio settings and add/remove frequencies using a service code, but I believe that Samsung have locked down that ability.
Great info
Great info!

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