Having lots of issues with cell connectivity - ONE Q&A, Help & Troubleshooting

So recently I've been having a lot of issues with my cell reception. Randomly during the day I would completely lose my reception. However the icon in the status bar will show I got a full connection. Mobile data works. But I will be unable to receive / make calls or text messages. A reboot will fix this. I've had this issue ever since an ota update from sultanrom. I've since tried flashing the stock ROM back but it happens on there as well. I'm currently on the latest sultan mm version. But this used to happen on his lollipop version as well It mostly seems to happen when charging my phone. I've tried different firmwares and modems but the issue is still there. This is a big problem because I've gone for 10+ hours several times without any cell reception thinking all was fine because the status bar shows a full connection. Has anyone else had this issue? I really need to get this sorted as it makes my phone unable to do the most basic things a phone should be doing.

Related

Misc Data Drops on Custom Rom

I keep getting data drops where it will drop mobile data completely and wont keep a connection with wifi. It still says its connected with wifi but it wont transfer any data, with mobile data it wont even show a data connection on the status bar.
I hear this is a common bug that a lot of people have, I get a good connection on stock 2.3.3 so I am currently stuck. I was running 1.9.9 MIUI and have this issue on anything else I try.
I loaded a stock build.prop w/ MIUI and it killed my cell network connection, no connection at all and it froze on reading SIM, but my wifi connection would not drop, and was flawless. Is it possible it is a setting in the build.prop that is being added or overlooked in roms?
I am having this same problem.
I recently purchased a G2x and installed the latest stable CM7 right off the bat, and started experiencing random drops to the EDGE network. This and a dead zone in the center of my house led me to believe my phone had a reception issue.
I have flashed back to the stock rom and my dead zone is gone, completely, and the data drops stopped.
Google searching hasn't led me to any answers and my next stop will be the CM forums.

[Q] GPS not fixing/locking while on mobile data transfer

Hi ive posted this in cyanogenmod forums, but maybe someone here experienced similiar issue:
Recently i got myself OnePlus One /China version/. At the moment i have it flashed with CM11 Nightly 01072014.
Everything works fine but the GPS. I am having some odd iggues with it. While it locks correct when im at home (WiFi connection enabled), when i leave home and start using navigation software, be it google maps or anything else, after i go out of reach from Wifi and mobile swaps to Mobile data transfer (HSPDA+) gps loses fix and cant get it locked back up anymore.
When i disable mobile data, it locks back up... so it seems like the issue is connected to mobile data transfer. Its pretty annoying since im using maps that require being 'online' which pretty much forces me to use offline maps.
Anyone ever faced similiar issue? Dont see how it could be connected to my carrier (T-Mobile Poland) since few days back when i was still on my older ACE2, all gps functions on that phone worked fine whilst being on mobile data etc. Only difference might be it wsnt HSPDA+ cappable....
Suggestions? This really is doing my head in, ive been googling around like crazy, trying all kinds of GPS 'fixes' but issue remains and most likely involves that mobile data transfers somehow.
I too am having this problem, what Im going to do is just flash a new radio (baseband) from the stock CM11S rom or maybe another rom and hope for the best. Remember ALWAYS make a back up before you do any mods to your oneplus.
Hi. This issue is driving me crazy. I've been looking for more information but I've only found this thread, a CyanogenMod jira bug (look for issue BACON-115, I can't post links yet), and an issue at Android Open Source Project issue tracker (look for Issue 72311: GPS losing satellites - Nexus 5 - 4.4.3 and 4.4.4)
I first found the jira bug, so I tried the gps.confg settings referenced there, after that the issue was slightly (very little actually) less annoying but the GPS still got lost very frequently, I believe those settings just improved locking/fixing times a bit.
Then I started tinkering with my settings while driving (in stop lights of course, not while actually moving ) and I noticed that as soon as I turned mobile data OFF, the GPS locked immediately and never got lost from work to home (a 30 min drive).
So I started querying Google for things like "GPS lost while mobile data on", after about an hour I got the bug in code.google.com, which suggests it's only happening while 3G data is on, not while 2G. And it is, I can get a constant GPS fix while on 2G. The bug thread hinted about flashing different versions of the radios to find a version that works.
I remembered that with OPO firmware 25R this issue was far less annoying so I went ahead and flashed only the radios from 25R. It was not completely fixed, but my yesterday commute got significantly less GPS signal loss, and when it got loss it took less time to fix again, which I attribute to the gps.conf from the jira bug.
TL;DR
I've experienced this issue with 30O and 33R firmwares and with CM Nightlies (which I'm using right now), but slightly less annoying with 25R. Flashing 25R radios and using the modified gps.conf alleviated the issues a lot but I still get frequent GPS signal lost. Turning off 3G will definitely make GPS fix/lock constantly.
I wonder if there are older radios that could get rid of the issue completely (and what drawbacks using older radios could bring), meanwhile I'm using Tasker to fall back to 2G as soon as I'm connected to my car's bluetooth AND Waze is opened, so that I can get a constant GPS fix/lock while driving.
I think this is an Android 4.4.3/4.4.4 issue, please vote here so that google takes notice of this.

Constant "Emergency calls only" and no signal

Heyho,
about three weeks ago, my N5 suddenly lost it's signal over night and shows me "Emergency calls only" and it won't register into any network, just giving "Selected network unavailable".
When this occured my N5 had 4.4.2 stock ROM and rooted. I've unrooted it and updated to 4.4.4, but I still got the same problem.
Problem occurs with any simcard, while simcard works with other phones just fine.
Have deleted and reconfigured APN, but didn't make any difference.
I get a signal every few days, but I still can't receive text/calls or call/text anyone and my mobile data doesn't work.
I even tried to downgrade to 4.4, but that didn't solve my problem either...
I'm from Germany, but in New Zealand at the moment, so I really need my phone in case of emergencies and to stay in touch with family/friends.
I have been searching for a solution since it started, but have not been able to find anything that worked.
Sending it back to Google isn't an option right now because I am travelling.
I am really thankfull for any suggestions or if anyone knows how to fix this problem!
Cheers
Have you checked to make sure the network setting says 2g/3g/LTE preferred. Because I had this problem when it was switched to 2g only and was fixed by the above option
If the above fails trying going to your dialer and typing *#*#4636#*#*. Go into phone information and you should see a drop down box to select your network mode. Play around with those until you get a signal but you might not want to try CDMA options (WCDMA is ok) since you're on a GSM network.
Sent from my Nexus 5 using XDA Free mobile app
had exactly the same issue as you mentioned. Nexus 5 tends to lose network without any logical explanation and it tends to work at one place but stop showing network if you walk half a mile down the road (or may not show any network anywhere). Google has released an update in June in which they have updated the modem to solve the problem..given that I am in India and the June update was for India, Australia and Newzeland, it worked like a charm for me (all i had to do was flash the modem from twrp)..people as far away as netherlands have reported the modem to work for them..
NOTE: IF U INTEND TO FLASH THE LATEST MODEM, DO NOT FORGET TO TAKE A BACKUP OF YOUR CURRENT MODEM PRIOR TO FLASHING THE NEW ONE..
check your sim card. if you can, try someone elses.
Alright,
I've tried every thing again so far, but nothing seems to work.
Sitting in the library, I noticed that I get a signal, when connected to WiFi, which stays for 1-2 hours after disconnecting.
But I still can't make any calls or text and mobile data doesn't work though the APN is correctly configured and and data enabled.
I really hope to be able to solve this problem somehow, don't want to put aside my beloved N5 :/
_____________________________________________________________________________________________________________
Edit: Haven't found any solution so far and bought a new phone for the moment until I'm able to send it back to Google.
Might be an hardware issue and not software related.
Cheers
Kimpfimp said:
Alright,
I've tried every thing again so far, but nothing seems to work.
Sitting in the library, I noticed that I get a signal, when connected to WiFi, which stays for 1-2 hours after disconnecting.
But I still can't make any calls or text and mobile data doesn't work though the APN is correctly configured and and data enabled.
I really hope to be able to solve this problem somehow, don't want to put aside my beloved N5 :/
_____________________________________________________________________________________________________________
Edit: Haven't found any solution so far and bought a new phone for the moment until I'm able to send it back to Google.
Might be an hardware issue and not software related.
Cheers
Click to expand...
Click to collapse
hey kimpfimp... u r not alone .. ive had this problem for 2 months now .. .. i have a nexus 5 and i have this exact same problem .. leads me to believe maybe its software related .. started after lolipop .. havent been able to find a solution yet !
worst part is that it is happening on an Replacement device after i RMAd my first nexus for a power button problem !!
i hope its software related and can be fixed .. because google is now refusing to rma this as im now out of my warranty period !

[Q] Nexus 5 Lollipop Wifi Drops - Major Headache

Ever since I got Lollipop on my Nexus 5, I have had major wifi issues. The wifi will randomly drop and only come back if i switch wifi on and off. Over the course of 2+ months, this has gotten increasingly aggravating. This happens both at work and at home.
Symptoms: while using my phone, all of a sudden the network stops working. This can be in the form of games, web browsing, or anything else. All of a sudden there is just a network timeout. If I disable wifi, the cellular network has always worked fine (so long as I have reception of course).
Things I have tried:
1. Flashing stock with a full wipe
2. Flashing a CM12 nightly with a full wipe - I just tried CM12 in the hopes that they may have had some form of bugfix. I had the same issues.
3. Setting the phone to 2.4ghz only.
4. Disabling PMF setting in WIFI config file.
5. Downgraded to Kitkat. I just flashed CM11. I havent used it too much yet but it seems like it is having the same issue.
I am at my wit's end. Is there anything else I can try? Please help!
At first CM11 seemed to help, but after using it for longer it is exhibiting the same WIFI issues. Any suggestions? My phone is quickly approaching paperweight territory...

modem_err - signal loss - random-reboot - high battery drain

Hi,
my phone lately shows an high battery drain, random reboots and signal losses.
Aside from supersu and adaway everything is stock. last-kmsg shows "modem_err"
A few days ago I updated my phone from MMB29V to MOB30H, right after this I went on holiday. (left country)
While being there everything worked fine.
But right after I comeback home the phone started to act strange (see title).
Anyone an idea what could cause the behaviour?
Maybe the update? And I didn't noticed it in holiday because of my disabled data connection?
I tried:
a full wipe, reflash of stock image
flash of old radio
looked out for wake locks (there are non)
using phone without apps (only stock)
Might flashing old bootloader/kernel help?
Maybe interesting:
My provider (Klarmobil (T-Mobile DE third-party)) tends to switch my network mode between 3G and HSPA,
from what I heard and see this depends on my data usage. (HSPA while surfing, 3G while idling). I have the "feeling"
it disconnects when it tries to switch.
Thanks for your help!
Edit:
Added another set of logfiles, showing a "signal-loss", it got so far to ask for my pin again.
Sadly errors still keep happening. I tried the march build and also a custom kernel, no change :crying:

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