Develop Bugs

Receive / Make Calls Whilst Using Gprs/edge

Whenever my friend is connected to net on a laptop using a WM6.1 machine with Internet sharing on a USB link and GPRS/Edge Internet connection she gets a Voicemail reply to any callers? Is this a problem with the phone or GSM provider.

It´s a network thing. Some providers set higher priorities to voice calls, so an active GPRS data connection is interrupted, others (like the one I have) unfortunately send incoming calls to voicemail and hold the data connection active.

Thought as much, thanks for the heads up.

No data while calling

I noticed that when i am on a call my data connection dissapears and when i hang up the connectino returns.. is this a known issue? or does anyone know how to fix this?
Also the connection drops a couple of times a day (random intervals) and i have to enable and disable airplane mode to reinstate the connection..

if you got only a 2G signal, this is normal and has been asked multiple times.
It also depends on your network. Some networks don't allow simultaneous voice and data, even on 3G!
as for the random drops, that ain't normal but can be the network killing the connection from their end to free up bandwidth on a inadequate network or cell.
of course, it could also be a dodgy phone :-(

It's normal in 2 situations:
- you are on 2G (GPRS, EDGE)
- you have poor signal and the phone can't cope and prefers to keep the voice connection.
Have you tried to browse while talking and it didn't work or is it just the indicator that disappears?

Works for me, called my landline from mobile, dropped to the home screen once the call connected, then loaded google in the internet browser (and it even detected my location!) Oh I was on hsdpa btw.

I know that Orange phones wont allow data and voice simultaneously

Im on orange and i just tested it on a 3g connection, it does work for me

I'm on t mobile UK, as I said above works here.
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk

[Q] Can't receive calls while on 2g

Hello,
I have my phone for few weeks already and today i noticed one major issue. I will try to explain everything as clear as it is possible.
While i am on 3g network, there are no problems at all. I can make a call, i can receive a call, i can receive SMS etc... Everything works as it should be.
When i switch to 2g that's when the problem comes in. In the first 15 seconds after switching to 2g, i can operate my phone as in 3g - i can send and receive calls, i can send and receive SMS'es. After 15 seconds there is no ability to receive any call. The caller alway hears the same song: "the phone you are trying to reach is either turned off or out of radio coverage...". Also no SMS'es can reach my phone. Despite of this, i can send a call any time i want...
There's one thing i've noticed. When i turn my mobile data on - everything works just fine (you should be familiar with turning off mobile data function), but this is unacceptable to my mind. It seems that when i want to receive a call, i should be on 3g (doesn't matter if mobile data is turned off or on), or on 2g but with mobile data turned on...
I did one test - changed the APN's entry to a messy one, and left the mobile data on. Still wasn't able to receive any calls. Thats leads to a statement: while on to 2g, i have to be connected to the internet to receive a call, while on 3g, i can disconnect form the internet and still be able to receive all calls.
Additional info: HTC Desire - unbranded, non-rooted, stock ROM.
Can anyone help me to solve this issue?

It seems this problem only appears at home. At work (15 miles away form home) i can be on 2G and still able to receive incoming calls... Any ideas?

anyone else hearing interference during calls?

Hi. I have the volume bug and not sure if this is related but i've noticed that I can hear interference during voice calls very faintly in the background. I'm on Vodafone and have only noticed this at home where I only get 2g coverage. I have WiFi on but dont know if thay makes a difference.
Anyone else hearing anything during calls? It's the classic cellular noises a bit like the built in radiation ringtone.

If you use wifi at home for data connection you could try the following thing.
2G gives trouble as you know...
In the phone application type *#*#4636#*#* touch phone information, set it to WCDMA only and see what happens and if it gets better with calls, maybe you lose the complete data connection and you have to put it back on where it was, I disconnects de the radio for a couple of seconds when it reconnects to the provider )
This forces not to use 2G networks, so there is no interference of this source.
Maybe it helps? it's just a thought

GrandPuba2000 said:
If you use wifi at home for data connection you could try the following thing.
2G gives trouble as you know...
In the phone application type *#*#4636#*#* touch phone information, set it to WCDMA only and see what happens and if it gets better with calls, maybe you lose the complete data connection and you have to put it back on where it was, I disconnects de the radio for a couple of seconds when it reconnects to the provider )
This forces not to use 2G networks, so there is no interference of this source.
Maybe it helps? it's just a thought
Click to expand...
Click to collapse
This will not fix anything especially as he specifically stated that he only gets 2G coverage at home

also, as I have already pointed out in another thread, that option does not stay persistent (at least in my experience)
oscillik said:
For all those people who are saying that you can force the phone into 3G only mode - I have some news for you -
It doesn't stick.
Try it yourself.
1. Go to the phone application
2. Hit *#*#4636#*#*
3. Select Phone Information
4. Scroll down until you find Set preferred network type
5. Change it to WDCDMA only (or indeed anything other than GSM/CDMA Auto PRL)
6. Now reboot your phone
It doesn't stay persistent.
Click to expand...
Click to collapse

But you don't make phonecalls over 2G are you, if you're on 900Mhz provider this will use gsm signal to make calls isn't it?

GrandPuba2000 said:
But you don't make phonecalls over 2G are you, if you're on 900Mhz provider this will use gsm signal to make calls isn't it?
Click to expand...
Click to collapse
you are incorrect - if your phone is in 2G mode (either due to forcing it into 2G mode via the settings option, or by being in a non-3G coverage area) all communications are done over 2G. This includes SMS, cellular calls, and mobile data access.

Ok, did not know this, and wanted to know.
Is this the case everywhere or a standard in mobile communications technology?
So no chance that GSM signal is stil there and works if you don't get 2G data connection?
Did not see my GSM signal drop out when 2G was available.

GrandPuba2000 said:
Ok, did not know this, and wanted to know.
Is this the case everywhere or a standard in mobile communications technology?
So no chance that GSM signal is stil there and works if you don't get 2G data connection?
Did not see my GSM signal drop out when 2G was available.
Click to expand...
Click to collapse
If you can only receive 2G connection in your coverage area, you will not be able to make calls over 3G.

Hey so has anyone else noticed this issue? As I mentioned, it's very very faint - as in you have to be in an otherwise silent room to notice. And it occurs when I have 3G too i've noticed today.
Some more detail:
The noise doesn't start as soon as the phone connects - usually a few seconds afterwards and it actually continues for a couple of seconds after i've hung up (which I've noticed if I put the phone straight back up to my ear).
Would someone else mind doing a test call in a very quiet place and letting me know?

Hi guys sorry to bump this but quite concerned that it's only my phone this is happening to. If someone wouldn't mind just listening carefully during a call (maybe to your voicemail to avoid the weirdness!) in a quiet room to let me know if they can hear interference that would be great.

So this problem frustrated me so much that I got the phone exchanged. Guess what though - same problem.
Surely someone else has noticed this - if you're in a quiet place it's both pretty loud and very distracting.
As I originally explained - after a few seconds of any call, I get a very short mute (we're talking microseconds) followed by the kind of background buzzing noise you get when you put a phone near a speaker.
Could it be down to a faulty batch?

Lost data or wifi connection when on call

Anyone else facing a problem of lost data connection during a call? It happens even even with wifi connection. I sometimes need to use the internet during a call... but the internet connection automatically disappears for the duration I'm on call. As soon as I end the call everything is normal.

When on LTE the phone automatically switch to 3G/UMTS during call (VoLTE is not supported by much providers yet).
During the switch if you're in a bad 3G area or with many people on your cell data connection is lost, the phone gives the priority to the call obviously. LTE is working very differently so that's why you can have a nice LTE data connection and without moving a ****ty UMTS data connection.
I've managed to browse web during my calls without issues on the 5T.