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Frequent loss of signal if perfect signal area
Posted 14 February 2012 - 08:29 PM
I've had an annoying issue recently where the phone (LG O2X P990) will lose signal for no reason even in good signal areas (I live 200 yards from an O2 tower and get full signal at all times).
The only way to get signal back is to either reboot or enter airplane mode and then turn it off again (airplane mode doesn't always work).
I suspected it was the SIM card so I have got a replacement but the same problem is still occurring.
I've tried the latest stable and the various recent nightlies and they all do the same thing. Could this be a hardware issue? It doesn't seem to do it when I'm using the phone, only when it's on standby (screen off).
I'm reluctant to wipe it and start from fresh because I've got it set up just as I like (which took ages) but needs must if anyone believes this will solve the problem.
Any ideas anyone? I can't go back to the stock ROM as I can't find a copy and when I do there are several versions and I don't know which one to get. I'd rather not attempt it and end up bricking the phone.
Any help is appreciated.
Posted 16 February 2012 - 06:04 PM
I've been on nightly 204 since it was released in November, and have seen dropped connection from time to time. When updating to nightly 220 the other day, it seems to have gotten worse. It now looses signal several times a day. Sometimes it connects by itself, but often needs reboot or toggling flight mode.
Not really any help, but at least you're not the only one
Posted 16 February 2012 - 06:28 PM
1. Backed up with CWM, cleared all the partitions, restored.
2. Set the preferred network type to "GSM/WCDMA (WCDMA preferred)" instead of "GSM/WCDMA (auto-mode)".
And since then it hasn't dropped the signal and required a reboot/airplane mode on/off. It has dropped signal but only because it was poor while I'm in work. It's always got it back within a minute or two on it's own.
So I believe there may be a bug in the auto switching code that causes it to hang the mobile module.
It's worth a try. If you can replicate the same then we might have a case.
It's good to know it's not my hardware though
Edited by andywhy, 16 February 2012 - 06:30 PM.
Posted 18 February 2012 - 07:44 PM
Fingers crossed anyway.
Posted 19 February 2012 - 08:17 AM
Posted 19 February 2012 - 10:58 AM
Posted 19 February 2012 - 06:31 PM
Posted 19 February 2012 - 06:52 PM
I also have automatic network time disabled which was supposed to be a factor according to some people.
Posted 20 February 2012 - 07:34 PM
Posted 20 February 2012 - 07:41 PM
Posted 21 February 2012 - 09:37 PM
Posted 23 February 2012 - 07:43 AM
Posted 23 February 2012 - 09:03 AM
I used the latest one
I did a backup to my SD with CWM, then followed the instructions on that page. I made sure to remove my SD card before doing it incase it got wiped. Once done put the card back in, it'll reboot loop a few times but a reset (battery out/in) fixes that and for me it booted into the last RC of Cyanogen I used. How I don't know. Anyway I managed to restore my ROM and it seems to work fine.
No noticeable difference but it hasn't dropped signal randomly yet, except in work where signal is very poor anyway.
Posted 23 February 2012 - 07:46 PM
Posted 24 February 2012 - 05:05 PM
Posted 24 February 2012 - 05:37 PM
Posted 28 March 2012 - 01:00 PM
I just found this thread about what seems to be the same issue. I installed the getril app as suggested, and it reports that my RIL and baseband are incompatible. Might explain it....
EDIT: Also, check out this thread on XDA about mismatching baseband/RIL, interesting stuff!
Edited by HairlessRat, 28 March 2012 - 01:11 PM.
Posted 28 March 2012 - 10:06 PM
I've not had any issues since the baseband update really. I did have to do it a 2nd time as I'm sure a ROM I used messed it up and made it revert but I'm not sure. Anyway it's working now, my only problem is the lack of signal at work which rapes it still. O2 won't do anything about it as they say outdoor coverage is perfectly fine so it's not their fault indoors isn't?!
Anyway, good luck