Hello,
I know the place in the phone options (on the band page) where you can
change the network from GPRS to UMTS (3G).
But is this possible to do programmatically with RIL or TAPI or another API
on the pocket pc device?
Thanks for any suggestions.
I support this request; Many topics on the board cover erratic behaviour with JJ, and ppl return their device to no avail. Swopping to another operator often helps. The issues SEEMS to be a poor UMTS reception with a given SIM or location, and this results in JJ trying to connect to UMTS or even latching on to UMTS but with an abysmal signal. After more than 15mins (annecdotal) of this is fails to ever go back to GSM without a reboot.
Solution is to turn off UMTS, but that's darned inconvenient cos you OFTEN want 3G speed (mail, RSS, google/surf).
Here's a way forwards; can someone tell us what reg entry gets changed when we select GSM vs UMTS? I will then write a couple of .reg files that can be launched from iLauncher (or whatever). Buzz coule probably write a switching app like he did for BT.
i have the same problem
When i use my Universal at home, there is pretty low level of UMTS/WCDMA signal and full level of standard GSM signal. By default Universal changes between those two sources automaticaly. But in my case, the quality of WCDMA signal is often varying just around critical level. So the result is that Universal changes band to GSM and back. And then again. And again. And... Due this, there is sometimes not possible to make data connection, because Uni is so much occupied by changing bands back and forth...
I would like to find a better solution, than select only GSM manually in phone settings. Especially because i have to unselect it manually every time when leaving home :-(
Is there any way to set treshold value (i expect increase it) for automatic switching between WCDMA and GSM?
I still do not know how to switch from UMTS to GPRS and back
with some API function (or AT command) on the device.
If I get these Infos from someone that would be great.
Then I could write a tool that checks the signal quality
and the network status and if UMTS signal is too low
it will activate GPRS.
I think this can be done with RIL API but have not found
any infos.
Houser
Anything new aobut this umts switch problems??
I do have the same problems, often i am unable to make calls, always when umts is on...
would be happy to hear something,
thomas
craigiecraigie4 said:
I support this request; Many topics on the board cover erratic behaviour with JJ, and ppl return their device to no avail. Swopping to another operator often helps. The issues SEEMS to be a poor UMTS reception with a given SIM or location, and this results in JJ trying to connect to UMTS or even latching on to UMTS but with an abysmal signal. After more than 15mins (annecdotal) of this is fails to ever go back to GSM without a reboot.
Solution is to turn off UMTS, but that's darned inconvenient cos you OFTEN want 3G speed (mail, RSS, google/surf).
Here's a way forwards; can someone tell us what reg entry gets changed when we select GSM vs UMTS? I will then write a couple of .reg files that can be launched from iLauncher (or whatever). Buzz coule probably write a switching app like he did for BT.
Click to expand...
Click to collapse
HKLM\SOFTWARE\OEM\UMTS
OPMODE=0/1/2 (AUTO/GSM/UMTS)
Related
Hi,
I've found that the switch between GPRS and UTMS can be a bit of a PITA. It causes TomTom to drop it's traffic connection, and makes web browsing in a marginal 3G area practically unusable as it's chops and changes between GPRS and UTMS (3G).
I've tried to create a new "Cellular Line" connection with the *99# dialup settings, in a hope that this would connect me to GPRS without switching to UTMS if available, but I can't get it to work - it just says "No modem at above number".
Has anybody got a solution to this?
Cheers,
Steve.
If you select Settings -> Phone -> Band and choose GSM (instead of Auto), what happens? Does it stick to GSM? I think it should do.
EDIT: Jus ttried it on mine. Had full UMTS signal and forced GSM and it worked!
I'm not in a position to test that at the moment (no 3G signal), however, doesn't that prevent all 3G facilities of the phone (i.e. video calls) from working?
Having said that, I can't think why I would want a video call, and I can always switch it back should I need to.
Cheers,
Steve.
Yes it does prevent all 3G features (and therefore extends battery life). Sorry, I didn't realise that this was not what you wanted to do. From your original post I thought you didn't want it to use UMTS at all.
Ideally, it was just the web browsing/internet access that I wanted to prevent switching to UTMS, but to be honest, I'm not sure I would miss video phoning - is there anything else I'm getting on 3G that I'll not get after making that change?
Cheers,
Steve.
As far as I'm aware, making voice calls on 3G is a little bit clearer than on GSM, but consumes more battery. So if you are unable to tell the difference between the two then you could fix it to GSM and save battery life.
However, don't forget that UMTS is vaunted as being 3 times faster than GPRS for internet use, so your browsing etc will slow down if you lock it into GSM/GPRS only mode. I bet this doesn't matter much for TomTom traffic though as I am sure it only uses small amounts of data. If you're happy with GPRS then go for it.
Yes, I'm aware of the speed difference between GPRS and UTMS. My main problem is that I use my Exec to update the football scores on my football club's website, but the home ground is in a marginal UTMS area, so it keeps switching on/off, and consequently takes much longer to update the score than if it just connected via GPRS.
I'll give these new settings a go, and if there are any unwanted side effects, I'll switch back.
Cheers,
Steve.
Having being in the know about 3G for some time now I'm saying that its virtually impossible to only use GSM for internet, but stay with 3G for vid calling.
Your best bet would be some 3rd party software for this as I don't think any 3G phone lets you do this.
Yes I agree Biohead. I don't even think third party software would help as the radio has to disconnect and then reconnect. So you can't do some stuff on GSM (like GPRS) and then some on UMTS (like Video calling) without disconnecting and reconnecting. Luckily for Mr Pritchard, he is not too bothered about video calling and so, hopefully, this will solve his problem.
Hey guys, My device is Kaiser(TyTNII) and AT&T is my operator.
I live in Philadelphia, US.
Before yesterday my TyTNII can access HSDPA (with "H" symbol on the top right) when I try to use internet.
However, I use Kaiser Tweak to change some setting of my device and suddenly my kaiser doesn't recognize HSDPA network anymore, I mean it will only show "3G" on the top right. I have checked all the settings and everything seems fine.
HSDPA function is checked and same as in the Kaiser Tweak.
Can someone help me out here?
Thanks.
i have the same problem, cant go into hsdpa or even 3g only edge. and it seems to have happened after using kaiser tweak also.
Got some help over in the Kaiser forum that helped me. Go to your comm manager then settings/phone/ then go to band and switch your network type to wcdma. after it updated the network i switched back to auto and it seems to be working so far for me. hope this helps you out, something you could try.
I seem to have the same issue but the above solution doesn't help. Whenever I set the phone to do HSDPA through Connections I loss all data connectivity, once I turn it off HSDPA I get 3G.
Is it possible for radio settings to survive a hard rest / ROM upgrade or is the HSDPA side of my Tilt broken :-(
Any insight or help would be real appreciated.
Several times I have gotten "Warning: Unable to change GSM/UMTS Band, Please try again later."
JohnnyGTO said:
I seem to have the same issue but the above solution doesn't help. Whenever I set the phone to do HSDPA through Connections I loss all data connectivity, once I turn it off HSDPA I get 3G.
Is it possible for radio settings to survive a hard rest / ROM upgrade or is the HSDPA side of my Tilt broken :-(
Any insight or help would be real appreciated.
Several times I have gotten "Warning: Unable to change GSM/UMTS Band, Please try again later."
Click to expand...
Click to collapse
OK is it possible for this to be tower related? What I mean is I drove about 4 miles from my house, got a better signal and surfed the internet using HSDPA. Now I'm back home and HSDPA is chocking and giving me "unknown error 0x80072f78"
What He!!?
One note on my HSDPA trouble, it must some how be related to the one tower nearest my home. When I go anywhere outside a 5 miles radius (I live near the tower) everything works fine.
Here is the weird part, every where else the phone will switch from HSDPA to 3G to Edge and back no problem. Here in town it locks into HSDPA and refuses to switch to 3G or anything else. I don't know if it means anything but it seems to get an IP address I can ping but I don't get any DNS info!.
Now how can I convince AT&T that there's a problem when their support person denies there is any HSDPA services and I should only expect 3G?
Hi.
I have an HTC Touch HD on the UK 3 Network.
It works fine with texts and calls n 3g but whenever I need data for an app etc it ignores a great 3g signal and tries to connect on HSDPA instead.
now this might not seem like a problem but it often switches from full 3G bars to one bar on HSDPA to check my email. this can take 5 to 10 seconds when it could have just done it on 3G.
what gives? am i using the right settings?
start/settings/phone/band
Network Type "Auto"
GSM/UMTS band "Auto"
when i was on Vodafone it would stay on the best choice ie HSDPA instead of all this swapping about.
I hope this is the right place to ask. not a major problem just a frustration.
thanks
don
In common with many (all?) of the five networks, 3UK has recently switched their handsets from staying on HDSPA to "only" 3g, but automatically changing to HSDPA when data traffic occurs.
HSDPA demands extra bandwidth to the cell. There might be a second or so delay while the handset re-negotiates the extra protocol, but it's done to give extra capacity on the cell, allowing more space for 3G voice calls, while ensuting your data speeds aren't affected by push-email or similar low-bandwidth devices using an always-on HSDPA protocol.
In short, it's completly normal and pretty standard nowadays. Keep your phone on Auto/3G, you can't force it to HSDPA only.
Symptoms
- You cannot maintain a constant data connection. The connection is often lost or dropped.
- HD2 reception indicator dances between G to 3G to H despite showing good reception, and user remaining stationary.
Counter measures - No cabs or registry tweaks needed.
Presented in the order I would try them. If the lower number levels don't work, then move up a level. These are offerred as advice from a UK based HD2 user, though may work for you elsewhere.
LEVEL 1
- Go to Comm Manager > Wireless Controls
- Turn the Data connection Off then On again.
This will usually get you back and running again faster than waiting for the HD2 to sort itself out.
LEVEL 2
- Go to Settings > All Settings > Connections > Advanced Network
- Disable HSDPA/HSUPA
This will stop your phone attempting to use '3.5G' and will mean that you only use 3G.
Remember to re-enable HSDPA/HSUPA when you are in an area with better reception.
LEVEL 3
- Go to Settings > Wireless Controls > Phone - Change phone settings
- Move down to Other Options > Band - Change baseband
- Change Network Type from Auto to GSM
- Change Band frequency from Auto to either GSM (900+1800)+UMTS or GSM (1900+850) . To make the decision, you need to know the GSM frequency your operator uses. If you don't know, you can just try both of the GSM options and see which works. No damage will be done by using the wrong frequency first time, and you can change back.
This will disable 3G and force your phone to use 2G. Most operators have decent 2G networks, so you shouldn't have the disconnects anymore, but you will have slower than 3G potential speeds.
Remember to change your phone back to Auto for both Network Type and Band Frequency when you are in an area with better reception.
Thanks for the heads up... will have to try some of these. I find it most annoying at times...!
Thanks for the advice, I do find those issues annoying. What are the benefits of using 3.5G? If they're aren't any major advantages and turning this off helps then I may as well leave it off.
CHIP STAXMAN said:
LEVEL 1
- Go to Comm Manager > Wireless Controls
- Turn the Data connection Off then On again.
Click to expand...
Click to collapse
The problem with this is that it b*llockses up your push email settings, if you use the phone to get email from an Exchange server. The better approach (assuming standard configuration) is to press and hold the power/end-call hard-button. That brings up a menu of four choices. The last of those is "terminate data connection". Click it. Anything the phone does which requires the data connection after that will automatically reactivate it.
3G 2100
These tricks may solve the issue for many but not for me because I'm in a 3G 2100 only network so I cannot switch to GSM. I will try to disable HSDPA/HSUPA to see if that works though.
The weird thing is that the issue occurs almost exclusively when I'm logged on an IM client and the phone stays in sleep mode a few minutes (say 15 min or so). After I wake up the phone the signal seems ok but the data connection is lost (IM, browsing, mail, weather update, etc.). It doesn't happen every time but very often, several times a day.
If I don't log on any instant messenger app the data connection is stable, especially with the new 1.66 ROM (I tried both Duttty's custom and official). In this case I lose data connection very rarely, in fact I din't even remember the last time I did.
Can anybody provide an explanation for this, what is happening with the connection between the IM server and the phone during sleep?
snerkler said:
Thanks for the advice, I do find those issues annoying. What are the benefits of using 3.5G? If they're aren't any major advantages and turning this off helps then I may as well leave it off.
Click to expand...
Click to collapse
If your network supports it, you should have higher potential data upload and download speeds through using 3.5G (HSDPA/HSUPA).
In reality and every day use, on many networks you probably wouldn't notice the difference between 3G and 3.5G.
I'm on Virgin Mobile, which piggybacks on T-Mobile's network here in the UK. My speedtests in central London, show virtually no difference between me using 2G, 3G and 3.5G!!!! Which is ridiculous. The main difference I get as a HD2 user is much more stable data connection on 2G vs 3G/3.5G.
HI all!
Right now I am using [Build][10.12.2010][NexusHD2-FRG83D V1.8 PPP+RMNET][Kernel: hastarin r8.5.3_oldcam] and that is quite ok for me.
However I havent found anywhere on that build an option to disable HDSPA speed.
What I would like is accept 3G but disable HSPDA. Now I only have a change to disable 3G totally and only get 2G. Basicly area where I live is keeping me a situation that phone is very often trying to connect HSPDA but then changes is 3G speed. It causes me time&battery drain.
I have found a solution to force phone only use 3G but that is what I wanted. 2G and 3G are ok but I want to disable HSPDA.
Anybody could help me?
Up, Up... anybody have same kind of need?
i also need same help regarding this, reason is my data plan only use 3g (umts) and not 3.5g (hsdpa)... but my android always switch 3g to hsdpa back and forth and drain battery much faster
is there any tweak/program/widget/application that can enable 3g (umts) only?
windows doenst have this problem cause in winmo i can switch the option easily (enable/disable hspa)... but android dont have this kind of thing
I have the same problem. I don't even have HSPDA where I live, yet it tries to connect, fails, and then connects to 3G. It's a very time consuming processor to wait for the phone to do this when I am just trying to load a website.
Yes.. maybe it will not drain much memory but.. who wouldn't want a fast internet..
Afaik Hsdpa uses the same radio towers (or whatever the name is) as Umts... just different software. so there should be no battery drain caused by this.
This mite help you
1. Go to your dialer
2. Dial *#*#INFO#*#*
3. Click 'Phone information'
4. Scroll down to the first dropdown selection and set according to your preference below...
For simplicity, there are two main types of cell carriers, GSM and CDMA.
The following popular data communication technology is associated with each cell carrier type:
GSM = GPRS (2g), EDGE(2g), UMTS(3g), WCDMA(3g), HSDPA(3g) {Cell Carrier examples: AT&T and T-Mobile}
CDMA = CDMA*(2/3g) EV-DO(3g) WiMax(3/4g) {Cell Carrier examples: Verizon and Sprint}
Now that the general stuff is out of the way, here's my take on the Preferred Network types:
WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities. This setting appears to just have the phone attempt to stay connected to the data communication type that works the best. (Maybe the Samsung Galaxy S will take advantage of this???)
Unknown - If none of the above fit or the phone is acting weird as far as connecting to the carrier, you will see your preferred network type is set to this
Click to expand...
Click to collapse
Source http://www.google.ie/support/forum/p/android/thread?tid=6a327a95211ac789&hl=en
domenukk said:
Afaik Hsdpa uses the same radio towers (or whatever the name is) as Umts... just different software. so there should be no battery drain caused by this.
Click to expand...
Click to collapse
uhh... maybe you dont catch what us mean....
when umts change to hspda (icon change from 3g to H) then it use battery power.. in my case i use 3g (umts and not 3.5g or hspda )data plan only... but android keep searching hspda signal and THIS is when battery used the most (the process) and EVEN when my area have 3.5g covered but because i use 3g only data plan... then the back and forth process (3g<->H) will kep coming and rdrain my battery fast
so... we look for any kind of workaround so our android keep stay in 3g (umts) and not drain any unnecessary battery power searching for hspda
btw sorry for my english
agarp said:
This mite help you
1. Go to your dialer
2. Dial *#*#INFO#*#*
3. Click 'Phone information'
4. Scroll down to the first dropdown selection and set according to your preference below...
Source http://www.google.ie/support/forum/p/android/thread?tid=6a327a95211ac789&hl=en
Click to expand...
Click to collapse
i use this thing before and no luck
i use "wcdma only" as the option and android still process 3g and 3.5 back and forth, maybe android "thinks" 3g/umts and 3.5/hspda as the same?? android categorize umts and hspda as one big fat 3G network
i wonder why newer os like android doesnt have this kind of feature in winmo there is an option :
disable hspa = so hspda disabled.. AKA 2G or UMTS only
enable hspa = enabled hspda, hspa, hsupa etc.. AKA 2G, UMTS and HSPDA
try this settings
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
agarp said:
try this settings
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
Click to expand...
Click to collapse
isnt cdma auto (prl) used exclusively for cdma phones? (those phones with evdo and wimax thing) and not used for our hd2 (GSM)???
C'mon how this is impossible with newer phone software??
This feature has been in WinMo and Symbian in many years!!
It is really frustrating that almost every time my phone is trying to make HSPDA connect and then decide 3G is enough and possible. It causes some delay and sometimes also timed out errors.
agreed
my android keep going back and forth between umts 3G and hspda 3.5G like some clueless kid while 2 experienced guy (symbian & winmo) laugh at him
i know this is a old topic
i have still this issue
my phone is switching to hsdpa an back to 3g after a few seconds
when the phone is connected to my slow wifi connection everything works fine and i can use it for 3 day's
when it is connected to hsdpa my battery is empty after 15 hours and the voip connection is not working properly (i need to start a ping to some server first to keep the connection alive so i can call with voip)
I just came upon this thread, but I don't have this problem, so I can't really test it out this theory. But my thought was, what if you just went into the build.prop file and edited the ro.ril.hsxpa.category settting from ro.ril.hsxpa.category=2 to ro.ril.hsxpa.category=0. I just tested it out and it never jumped from 3g to H. My only concern is that you wouln't get the fastest speed you could be getting. Test it out and let me know though.
at this moment it is not posible to root my phone (SE Xperia pro with latest firmware)
so i am afraid we need to wait to test this
but thanks for the hint