[Q] Phone looses data connection when on a call - Galaxy S III Q&A, Help & Troubleshooting

I'm having this issue almost all the time.
After some minutes on a call (after 5 or more minutes) the phone looses data connection (either HSPDA or 3G or GSM).
As soon as I hung up the data connection restores again.
It doesn't matter if using Bluetooth or speaker.
Mostly it happens while I am driving and I have GPS turned on as well...
It did this since day 1. Have tested ALL modems so far and all ROMs (custom or stock). Nothing would fix it.
It's not that it switched from 3G to 2G, it is just loosing any kind of data connection/connectivity.
Is this an operator issue? Vodafone Romania
Any idea?
Thanks.

Hi
The same "problem" here Every time I have a call, the data connection is lost. As soon as I hang up, the data connectin restores again.
I had this issue also with other phones. Maybe it is a operator issue. To safe bandwide??
It doesn't matter if I have 2G/3G/GPS/WiFi on.

Related

Airtel Mumbai users, is the network acting up?

I had absolutely *no* issues with the cellular network whatsoever until yesterday noon, that's when the problems started, all of a sudden.
I started experiencing disconnections from the 3G network intermittently, like every 5-10 seconds it would disconnect and reconnect, extremely unstable. I then put the phone in 2G mode, but I lost my EDGE data connection despite the APN's configured properly. I even called up the provider and had them deliver the APN settings to the phone, but to no avail. My data connection just didn't work, i.e. no 'E' symbol, nada,
Thinking it might be something to do with the ROM, I restored my 2.1 backup via xRecovery, but experienced the exact same issues. Extremely unstable 3G with it's intermittent disconnects etc and NO data connection when it 2G mode. In the 'About Phone' status, it just shows 'Unknown' as the mobile connection type and 'disconnected' in the connection state.
I even went ahead clean flashed the 2.1 .435 ftf via flashtool, but the same issues persist!
What do you think the problem could be? I triple checked with my operator and they say the data services are active on my number, no problem from their end.
Could it be a hardware issue? I unfortunately don't have another SIM I can test with - that said I greatly doubt it could be a hardware issue.
What do you think?
I'm on Wolfbreak's CM 6.1.3 v4.4
Could be a network issue. Do you have this problem at a different place. May be in a different cell. There's always issues initially after deployment of new 3g deployment.
There is rarely a problem with only the data part. As all the protocol stack are not changed or fiddled in these new rom.
So less chance of the rom.
Sent from my X10i using XDA Premium App
Yeah probably a network issue due to the super important india-pakistan semi final.
Sent from my X10i using XDA App

[Q] [AT&T] Losing data connection when leaving wi-fi network

I don't believe I was having this problem at first, but now when I leave a wi-fi connection at home or at work, and I try to use the data connection it doesn't work. The phone is not switching to the cell towers for some reason. I have to disable data, and sometimes wi-fi, and then re-enable data on the phone to get a connection. Or reboot
This is stock btw. Anyone else have this problem? AT&T support was no help
Edit> Just left my work network to test it out and it switched this time, so it doesn't happen every time. Which makes it more frustrating.
Mine was working just fine a couple hours ago, now I get absolutely no data. This is very frustrating.

[Q] Wifi to 3G switch not working

Hi guys,
I seem to have a weird problem on my HTC Sensation. I have been noticing that when the phone switches from Wifi to 'H', the mobile data stops working. I can see the signal bars so no problems with making calls, text etc. I have tried putting phone into airplane more, resetting mobile data and a couple of apps that reset the mobile data stack. None of that has worked. The only way I have made it work is by restarting the phone - quite frustrating. The mobile data then starts working. It has only happened when 'H' is displayed as the mobile data.
Any help here would be much appreciated.
thanks!
Having the same issue here.. did you find a way to make the automatic switch working in these months?
Many thanks

[Q] Wifi and data on at the same time, limited internet.

Rooted stock ROM Verizon I605 running 4.1.2.
I was in Korea for the past 6 months and just got back the other day. Before I left, I never had any problems, but since returning, my wifi and data are on at the same time, and it's causing me problems. Here's what's going on:
If I just have mobile data on, everything works as it should. If I turn on Wifi, it will connect, but the data connection will also remain, and my internet speeds will become spotty. If I turn on mobile data and just try to use wifi, the Wifi icon appears (with the orange/green arrows indicating activity), but apps don't connect. Facebook automatically tells me "No Internet connection," Opera won't load pages, Google Talk can't sign in, etc. If I turn mobile data back on, things work again, albeit slowly.
The strange thing is if I turn on Airplane Mode and then turn it off, leaving data off, my wifi will work 100% normally. If I try to turn on mobile data again, I get the same issue.
While I was away, I replaced the SIM card so I could use my phone over there. I messed with some APN stuff thinking I would be able to get data on my phone in Korea, but that didn't work out so I returned my APN settings to default. I have a feeling that's the source of my problems, but I have no idea how to fix it. I tried restoring my APN settings to default through the settings, but that didn't fix it either.
Any help at all would be appreciated!
If it helps I have been seeing the same thing. I'm on CleanRom 3.5 (Verizon Rom base) and PB&J kernel. It seems to be hunting between them even when in strong wifi signal.
Interestingly enough it's not doing it right now.
I'll keep a closer eye on it now.
Sent from my SCH-I605 using xda premium
In my case, it's a constant problem (unless I manually go into airplane mode, like explained). It doesn't work sometimes and not work other times.
I'm trying to use wifi at home, so signal strength isn't an issue either.

mobile data is disabled but data plan is charged on CM12.1

I have a LTE-enabled SIM on a C6843. My typical scenario is: phone is on airplane mode during the night, and goes out of airplane mode in the morning. Mobile data is always disabled.
Recently I noticed that my operator has been charging my pre-paid plan with data connection charges although I have data connection always disabled. I get daily charges for data connection with 0,000 MB transfered (TIM Brazil, if that matters).
The phone is on CM12.1 20150917, but this has been happening for at least 30 days (based on the data charges).
Has anyone seen similar behavior? Is there some workaround?
Pedro
CM bug: https://jira.cyanogenmod.org/browse/NIGHTLIES-1827
workaround
Changing data mobile connection from LTE to 3G seems to mostly avoid this issue for me. It does add the extra step to change connection to LTE when I do have to use the mobile network.

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