[PROBLEM] No signal with HSDPA activated - Nexus 4 Q&A, Help & Troubleshooting

Hey,
so today I noticed my N4 couldn't get any telephone signal whatsoever. At first I thought the provider was just having issues but when I came home and tested my other phone it worked fine, so it's an issue with my N4.
Did a factory reset, problem remained. Then I tried activating 2G only and all of sudden the signal was back, telephone and data on 2G and everything works fine.
As soon as I uncheck 2G only however, both signals are gone and here's the kicker: even when wifi is activated and connected I get no signal. (with 2G+wifi I do however)
Had faux' kernel installed on stock deodexed, wen't back to stock kernel for now, didn't change anything else lately, problem just randomly appeared.
EDIT: nevermind, I just realized I checked 2G only on the other phone as well and forgot about it. Same problem there. Has to be a provider issue.

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[Q] Tilapia 3g problem

Hi all,
Been having some problems recently on my wife's Nexus 3g (tilapia). She had it for about six weeks now, I rooted it and installed PA on it (same as my grouper).
Everything was working fine until recently, 3g stopped working for no reason that I have been able to figure out.
What I've tried and noticed so far:
Clean install (full wipe) of PA, and also tried different custom roms - 3g not working
Tried the simcard from my phone to rule out network errors (since I'm on a different network) - still not working
In notification window, 3g coverage bar shows blue when wifi is on, asa it's turned off, a little H appears next to 3g bar, which straight away goes grey and stays that way until wifi is turned back on (this is all in range of wifi network, 3g icon does the same thing if i move far enough to lose wifi access). Strangely enough the carrier (Telstra) shows on my lockscreen, but any attempts to use the connection, like playstore, browser, go sms, all return a no connection error. Also when wifi is off and 3g icon is greyed out, the device sometimes crashes (hardlock) when trying to unlock the lockscreen (maybe unrelated).
Flashed back to stock following these instructions: http://forum.xda-developers.com/showpost.php?p=32075129&postcount=1 - problem still remains
APN settings have been tried on both auto and manual, no luck.
At this stage I'm starting to think this may be a hardware issue with the 3g modem and thinking of just returning the unit altogether.
Has anyone had anything similar happen?
EDIT I've returned it on warranty

[Q] Data Connection is no more - known issue?

I woke up with my phone (stock 4.3, rooted) having no data (on MetroPCS). After two hours, still nothing. 3G or H shows up with grey bars, but no blue and no data connection. I changed from WCDMA preferred to only. I reset the phone. I flashed the stock 4.2 rom, tried airplane mode, 2G only, and removed sim card - and still nothing. I've been with Solavei since May with my Nexus 4 and switched to MetroPCS in August.
Has this happened before, or did my phone just 'break'?
Any tips? Thanks.
looks like a carrier problem, the radio seems to be working fine
try another sim card
Well, not it's mysteriously working again. Is this most likely a carrier or phone issue? When I called them (didn't mention that before) they had no outage.

[Q] Losing signal/data network problem on D801

Hi, I have D801,
I recently started to have this wierd problem, where I would lose all my signals completely, and comes back on, just without an LTE (regular 4G).
after this, if i go in to network settings, it is defaulted to WCDMA only or WCDMA preferred, instead of the ones with LTE in it.
no matter how many times I change this, it keeps going back.
I literally live right next to the tower.
I did not have this problem a day ago, I don't know what is causing this problem
i have flashed
http://forum.xda-developers.com/showthread.php?p=49449195
this on my D801, and this is the only thing I did before having any issues.
or maybe it's something else.
APN setting looks normal etc.
can anyone tell me what to do ?
I tried going back to completely stock, and the problem is still there.
I used this method.
http://forum.xda-developers.com/showthread.php?t=2477595
is there anything in this procedure that doesn't get restored to stock?
HELP!
I was at a location where the network reception was bad and I lost signal. My phone has not been having network signal since then. Signal strength 0.

One plus two 3g not working

Got my Oneplus two yesterday. Although I'm extremely happy with the phone I have this teething problem.
Once I updated right away and kept the sim in I got the 3G signal as there is no 4G where I live. Now everything works OK except the data. Once I switch on the data it works for about 30 seconds and stops although the H sign is still there. I have tried manually entering the APN and the problem still persists. Network is not a problem because same sim in my old phone gives continuos data in 3G. Strangely 2G data works with no problems!
In the forum one plus one had same problems but no direct solutions. Is this a recurring problem? Should I return the phone or replace?

Mobile Radio 2G issue

Hello everyone, I'm experiencing a terrible situation with my OPT - O2 2.1.2.
I used to rely on Intelli3G (an Xposed module that switches mobile radio to 2G when screen is off to save battery and then reverts back to LTE on screen on).
This worked perfectly with OPO but I noticed strange disconnections of the mobile data with no possibility to switch on again without rebooting.
I've studied what happens when the phone is asked to switch to 2G Only:
with the *#*#4636#*#* menu I noticed that the network type says "unknown,unknown" and there's nothing I can do to get things working again until a reboot.
In this situation I see that there's signal, triangle is full, but I'm unreachable.
If I keep my radio to WCDMA preferred (with screen off) or LTE/GSM (while using the phone) everything works fine (so far).
My carrier is Vodafone IT, I already changed my SIM card for I thought I had a faulty one.
Anyone else is experiencing these disconnections?
MetalSinger said:
Hello everyone, I'm experiencing a terrible situation with my OPT - O2 2.1.2.
I used to rely on Intelli3G (an Xposed module that switches mobile radio to 2G when screen is off to save battery and then reverts back to LTE on screen on).
This worked perfectly with OPO but I noticed strange disconnections of the mobile data with no possibility to switch on again without rebooting.
I've studied what happens when the phone is asked to switch to 2G Only:
with the *#*#4636#*#* menu I noticed that the network type says "unknown,unknown" and there's nothing I can do to get things working again until a reboot.
In this situation I see that there's signal, triangle is full, but I'm unreachable.
If I keep my radio to WCDMA preferred (with screen off) or LTE/GSM (while using the phone) everything works fine (so far).
My carrier is Vodafone IT, I already changed my SIM card for I thought I had a faulty one.
Anyone else is experiencing these disconnections?
Click to expand...
Click to collapse
I'm having similar issues. I can only connect with one SIM at a time. One SIM card only connects via 2G. I think I need to go buy a new phone. I've even restored back to old versions without luck. I've flashed the modem too. No luck. This is bad for someone on the road like me. I'm missing critical calls. I'm back to using two phones as a work around.

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