WCDMA / GSM auto problem - Desire Q&A, Help & Troubleshooting

Hello Guys,
I'm experiencing a problem with my Froyo Desire for probably a week now.
The thing is that in certain areas my Phone can not receive calls / sms or such. In other words "GSM services" dont work. 3g though works fine (stable, strong and fast connection) My Provider is T-Mobile.
After quite a lot of testing I was able to isolate the error:
When WCDMA / GSM is chosen by the phone automatically it seems to me as if it didnt switch "back" to register with my provider via GSM when i want to make a call or if someone wants to call me.
When i switch to "GSM only" manually everything works fine but i have no 3g of course.
I also experience this problem only in certain areas. I live in an area where there is really strong HSDPA available (up to 7mbit\s). When i go to other places of my city i still get HSDPA (not as strong) but calls / sms still work.
The last paragraph may be of no importance, i don know.. probably it helps..
I have googled quite much about this problem and also found a few persons experiencing the same issue but nobody was able to come up with a solution.
I would be very thankful if someone could try to figure this out.
schnip

push______

Hi Guys,
... exactly the same problem here!
- same device
- t-mobile germany
- problem exists only in specific cells
ideas or solutions welcome
LordKnut.

gsm only Desire?
I'm having a nightmare with 3g 2g connectivity on my Desire on the three network whilst at home. If I could manually select gsm only this would be fine as I could still call and text and use wi-fi. Unfortunately my options are gsm/wcdpa (or whatever) auto or the 3g only.
can someone please advise if it is possible to select gsm only and if so, how?
many thanks

Can someone please advise me how if possible, to set the desire to gsm only?

VKeane said:
Can someone please advise me how if possible, to set the desire to gsm only?
Click to expand...
Click to collapse
Wireless and network-Mobile network- should be here somewhere.

Thanks, but there is no option for gsm only. It's wcdma only or gsm/wcdma auto. there has to be a way around this.

Similar problem, different version
I've experienced similar problem.
In some area, I can get steady grps signal when I switched GSM only on; but when I switched WCDMA/GSM on, I could get no data connection at all.
I'm using China Unicom's mobile service.

Solution
Hi there,
I've the same issue and I fix it allowing the option GSM/WCDMA Auto in the configuration menu.
Then enter the following code *#*#4636#*#*, select "phone Information" and set preferred network type, set "GSM car (PRL)".
Sorry about my bad english.

Related

Cannot select manual network?

Hi,
I've purchased an unlocked TP2 from Clove and it seems to be working well, except for one irritating problem. I cannot select a network operator manually. I have the tab available but everytime I click on it, it gives me a 'device.exe' error.
I have been experiencing a lot of missed calls and my network operator suggested that I change the automatic settings to manual. This obviously did not happen and my callers continue to get a 'customer not reachable message'.
I tried calling HTC (India) and they had no idea on how to resolve this issue, partly because the TP2 hasn't been released here as yet.
Any help would be much appreciated.
Thanks in advance
had the same missed calling problem, but it lies on the EDGE network where i always ON, change it to 3G and problem is gone. however, battery life decreased significantly
Unfortunately, I can't seem to find the 3G selection tab. I wonder if it's because the one I have is a Euro version? Will dig in deeper.
Thanks
nikanarani said:
Unfortunately, I can't seem to find the 3G selection tab. I wonder if it's because the one I have is a Euro version? Will dig in deeper.
Thanks
Click to expand...
Click to collapse
Look under start\settings\phone\band change it to only use GSM and it will stop switching between bands, however data will be much slower on GSM than UMTS.
Cheers,
Beasty
Still no luck. Will keep on pegging at this.

[Q] GSM network mode

I have noticed people managed to change their network mode to GSM only mode??? How do you that?? I only have 2 options: WCMDA and GSM/WCDMA auto?? Is this thing vary due to your courier?? Currently I am with 3 Australia. I wish I have the option to switch only to GSM. From experience, it can save you a lot of battery.
If you don't have the option then you can't pick it. I don't know if that means it's been removed or if it's simply because 3 don't offer a 2G network service (GSM mode). They probably have some 2G sharing but only in spots without 3G so you still have the GSM/WCDMA auto mode.
That's the best I can offer since I know that's how it works with 3 over here in the UK where they have only their 3G network. The firmware likely has GSM mode disabled for that reason but wait for more to back me up or prove me wrong.
Dyonas said:
If you don't have the option then you can't pick it. I don't know if that means it's been removed or if it's simply because 3 don't offer a 2G network service (GSM mode). They probably have some 2G sharing but only in spots without 3G so you still have the GSM/WCDMA auto mode.
That's the best I can offer since I know that's how it works with 3 over here in the UK where they have only their 3G network. The firmware likely has GSM mode disabled for that reason but wait for more to back me up or prove me wrong.
Click to expand...
Click to collapse
I have a feeling it could be the ROM or firmware that comes with it has it disabled the GSM only option. My Desire HD is the UK version. I am not sure if the other Australian version (from Voda or 3) have that options. With my original desire (and also using 3), I have that GSM only option available. So I dont think it's because 3 doesnt offer 2G network.
Get Advanced settings from Market. You can set it to GSM Only in the phone information menu.
LecterMe said:
Get Advanced settings from Market. You can set it to GSM Only in the phone information menu.
Click to expand...
Click to collapse
Thank you for sharing..yes, it works....but I will try out and see if it does save a lot of battery life.
Type *#*#4636#*#* in the phone dialer to get to testing menu. Under phone info you can set different options that are not otherwise available. No app is required.
Sent from my HTC Desire using Tapatalk
ardsar said:
Type *#*#4636#*#* in the phone dialer to get to testing menu. Under phone info you can set different options that are not otherwise available. No app is required.
Sent from my HTC Desire using Tapatalk
Click to expand...
Click to collapse
Thanks for the info. I have tested both method...both work. But the only problem, how do we set it permanently?? I mean I have noticed every time you reboot the phone, the setting changes?? and I have to set it back to GSM only??
but even if you could technically switch it to gsm, would it actually make a difference? surely if the actual mobile network is pure 3g and no 2g, then switching on the phone wouldn't change a thing? as its not actually possible to use 2g on 3 network?(because they built network from scratch out of 3g is what they always boast about anyway..)
This is strange. I have an unbranded bought sim free HTC sensation here in the UK which Im using on the 3 network and I dont have the option under network to set it to gsm only. This option should be here on an unbranded handset, and its there on my old Desire which was also bought unbranded sim free when Im using that on the 3 network.
Anyone shed any light on this? I know the work arounds mentioned above, but Im more interested in why the option is missing on my handset.
Cheers
PS I know this is the Desire HD thread but its the only topic I could find on this subject so far.
I don't think it matters, just don't even bother with the settings menu for that in the first place. in the Testing menu just set the radio to either GSM Auto (PRL) or GSM Only. GSM gives more talk time.

[Q] Change preferred network order?

I have a slightly odd requirement, and I wondered if there was any way to fix it:
My carrier has a partnership with a second carrier so we can roam on each others networks for no extra cost.
Where I live, my own carrier only gives me a 2G signal, whereas the other gets 3G. Thing is, I have to physically select the other network. If it's on Automatic, it always "prefers" my own carrier.
This is fine until I'm on the other side of town where the other network gets no signal at all. I then have to manually select my own carrier again!
Is there any way to get it to prefer the other network, or even more ideally, prefer the one that offers the better signal at any given point?
Hi,
a bit of *bump* because I'm struggling with the same issue. I had such option on my previous samsung i780 (oooold) and it worked like a charm.
Currently my mobile operator has 2 roaming partners and if I want to change quickly the preferred order (because in some location it might have better coverage but only there and only for a while) I wold have to switch simcard to the old phone...
Isn't there at even a separate aplication to do that? Does andorid API allow such modification?
Glad I'm not the only one!
Interesting you mention an app to do it... i've not looked actually. If an app can access the list of networks and actually set the phone to use one, then I guess it would be possible. I'll check it out...
to the best of my understanding this is somewhat network option/setting and when suggesting an app I was thinging abount some way to read this setting, modify it and then save/send back to network. It would be a matter of access to the network settings from the API and knowledge how to operate it....
Still investigating this. Looks like the stuff to access the list of networks is in some internal APIs, so a little harder to access. I'll post back when I learn more...
Hey I hope you guys can figure this out have you tried the *#*#4636#*#* command and changed the radio? This will select the most preferred network.. e.g. I'm with Telstra in Australia, the stock radio defaults to 2100MHz but Telstra's HSPA+ is 850Mhz.. so I have to switch to AUS2 radio so it defaults to that every time.
Sent from my Galaxy Nexus using xda premium
@Simmo3D
It's not about the radio band but about the service provider itself.

HTC Desire reception

Hello! I bought a desire second hand and it has no reception. I tried to change the radio and I tried almost everything. It didn't work. When there is an outgoing connection the reception is 3 and 4 bars but when the device go to sleep and then wakes up there is no reception. I think that is a problem in 2G module but I can't find the desire's scheme to see where is the 2G module situated and to see if it is broken.
Please if someone has a a scheme please post it or know what is the problem.
toncata said:
Hello! I bought a desire second hand and it has no reception. I tried to change the radio and I tried almost everything. It didn't work. When there is an outgoing connection the reception is 3 and 4 bars but when the device go to sleep and then wakes up there is no reception. I think that is a problem in 2G module but I can't find the desire's scheme to see where is the 2G module situated and to see if it is broken.
Please if someone has a a scheme please post it or know what is the problem.
Click to expand...
Click to collapse
It looks at the operator's APN, it is possible that they are not in his place.
Is it Sim-Unlock???
You should not change the Radio until you do not solve the problem. Anyway: does he settle well when you change it?
Wel1973 said:
It looks at the operator's APN, it is possible that they are not in his place.
Is it Sim-Unlock???
You should not change the Radio until you do not solve the problem. Anyway: does he settle well when you change it?
Click to expand...
Click to collapse
Yes, it is Sim-Unlock. When the outgoing connection is active, there is no problem, Sometimes it drops but most of the cases it is stable and it doesnt stop. But when going to sleep there is no reception.
I look at the APN but everything is ok.
Type this on telephone: *#*#4636#*#*
It looks in the principal field of the submenu, and if it puts WCDMA you must change to GSM auto (PRL). It can be that it gives turned out...
Greetings.
Wel1973 said:
Type this on telephone: *#*#4636#*#*
It looks in the principal field of the submenu, and if it puts WCDMA you must change to GSM auto (PRL). It can be that it gives turned out...
Greetings.
Click to expand...
Click to collapse
It doesnt resolve the problem. Still exist.
Is it possible the problems is from this:
http://www.parts4repair.com/htc-desire-antenna-cover-black/
toncata said:
Is it possible the problems is from this:
http://www.parts4repair.com/htc-desire-antenna-cover-black/
Click to expand...
Click to collapse
Ummm!
If, probably.
It seems of the hard....
Good Luck!! and Grettings!!
Is someone know if there is some tech in the antenna cover or what is the role of it?
i have the same problem.
WCDMA works fine but GSM is broken. I've tried everything... different radios, settings, etc... looks like a hardware defect.
Did you find a solution?
I would love to find a way to really troubleshoot this. I've been having problems with flakey reception for a very long while. Im inclined to think the desire simply does not perform well in areas with moderate to low coverage. In other words, it needs a strong signal.
Are you sure your provider has a gsm network? In Canada, Bell and Telus (and their discount brands) don't have a gsm network. They built a hsdpa network on top of their old 2G cdma network. They are not compatible. Rogers network is better since you can always fall back on the legacy gsm network.
Sent from my HTC Desire using xda app-developers app

[Q] Change 3G band to European GSM 900/1800

A family member gifted me a Galaxy S4, however it is the SGH-M919. I currently live in Europe and 3G bands in my region are GSM 900/1800. At the moment I can't access 3G and any other type of data for that matter (LTE is not supported here). Is there a way to change T-mobile 950 and 1900 bands to my region ones?
Thanks for taking your time to answer
Sadly not.
Since the radio does not support those frequencies for hsdpa
TheArtiszan said:
Sadly not.
Since the radio does not support those frequencies for hsdpa
Click to expand...
Click to collapse
So there's no way to fix it?
Hello Flex,
I have the same phone "Samsung S4 SGH-M919 - Tmobile" and I live in Hungary, it works fine with me all you have to do is just to switch form WCDMA/GSM to any other option "like GSM only" then back to WCDMA/GSM as a kind of refresh and the 3G will work fine after that, you can find this inside Settings > More Networks > Mobile Networks > Network mode, but unfortunately you have to do this every time you restart your device.
There is also another alternative solution is to reset the Access point names to default, you can find this inside Settings > More Networks > Mobile Networks > Access Point Names.
to be honest I don't know the reason of this error, but try what I described and tell me if it works with you.
Good Luck
Well. I have the exact same phone and have tried several ROMs, either custom or stock and basebands also. Nothing seems to work. The very few users who reported it was working didn't provide much evidence of it. Even Wikipedia says no 3G 900MHz availability for this phone. A simple edit to NV 1877 values won't solve it. I've tried that too.

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