[Q] GSM Issues - G2 Q&A, Help & Troubleshooting

Hello,
I got a new Lg G2 D802 a week ago and have some srtange issues with it. Although my phone seems connected to my GSM provider about once a day i notice i cannot receive/make calls. Only thing to fix it is by rebooting the phone. It tried going in to airplane mode but it doent help and GSM signal still appears to be full while airplane mode is on. Basically its like i have no gsm signal but phone says its full.
This happens while i m sitting in my office with full GSM signal, another colleague next to me with the same device and provider never had this problem.
Has anyone else had this problem? Do you thing its a hardware or software issue? I tried searching for it but didn't find anything relevant.
Thanks in advance.

I also noticed in Settings the "Mobile Networks" option is grayed out when this happens

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Thanks!
I have this problem .
I can not call or receive call.
Help us please ...
it can be your radio that might be causing the problem?
try updating your PRL
Thanks for the support guys. It turns out that my SIM card was actually kicking the bucket, and so I went into Virgin Mobile, and they replaced it in 5 minutes. So far, no problems...so it seems sorted.
Thanks anyway!

Network Mode not working

On my K3 Note, I can't pick preferred network mode on ANY rom/firmware.
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Any help guys? No one knows what could be the issue?
I tried using the *#*#4636#*#* code and set the "GSM Only" but it still doesn't work.
Is anyone else having the same issue?
Edit:
Also what I've noticed is that while using CyanogenMod (atm), it stays on 2G until I turn the screen off. Then it goes back to 4G.
After turning the screen back on it then goes back to 2G again.
same problem here when dialling number it said invalid MMI code and when switching to 4g the other network appear no signal.. hope someone here have solution. i try several roms but same problem issue.
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Hi all
The past 2 days I seem to be having an issue with intermittent 4G coverage...
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I am on EE UK and running 7.1.1 Beta NPF10C
I have restarted, turned on and off airplane mode, reset my APN to no avail.
Anything else you need to need to know I will provide
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I have had the same problems occasionally & I think it's an EE fault. It basically means you have a 4G connection but no internet access. Toggling mobile data off, waiting a minute or two, and re-enabling seems to get a new connection.

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Hi All,
My P8 (GRA-L09) running B399, but happens on all builds, sporadically drops my providers GSM network signal.
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Sparkrite said:
Hi All,
My P8 (GRA-L09) running B399, but happens on all builds, sporadically drops my providers GSM network signal.
It sometimes shows "Emergency Call Only" but on occasions still shows providers name as if still connected. Now, a quick change to "Airplane Mode" on/off brings back the signal but as I don't know when it drops signal it is more than annoying, to say the least, in fact the phone is pretty useless like this.
Any ideas, please? BTW I have tried changing SIM.
TIA.
Click to expand...
Click to collapse
My huawei p8 (also GRA L09) only works if I set it up to use 4g and then I cant call anyone or be called. Of I set it up to use 2g/3g connection it loses signal completely. It happened since the last two update, first occasionaly now permanently, even on cust roms, except Magic arrow, that I didnt used yet Have no idea why this is happening and dont have answer on your problem, but just to let you know that you are not alone in this problem Anyone have solution, I would really liked to know!

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Hi,
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i've reset the phone many times and update it with the latest ones but nothing happens.
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If i root the phone and put a custom rom can solve the issue?
i love so much my Note so i don't want to loose it.
Thanks in advance.

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