Signal goes between full and none for no reason. - Nexus 5 Q&A, Help & Troubleshooting

I recently have had an issue, and this only occurs on CyanogenMod (11 & 12). Basically, I'll be using my phone normally, but I'll notice my signal will go from full bars to no service every 30 seconds or so, it seems. That interval is to give you an idea. This issue does not occur on any other ROM that I've used (Cataclysm, PA, Rastapop, Stock, so forth). I've tried adding my APN as a fix but didn't seem to do anything. Information:
Sprint MVNO (Ting), running barebones CM, no gapps.
I'd love to get this solved, if anyone has ever figured this out. I've searched on Google and have seen no resolution, but have seen other's with the issue.

Related

Network problems on all ICS roms (KG2 phone)

I am having problems with my network on every ICS rom I have tried. The roms are Darky ICS and the Resurrection Remix 9.7 and 1.0. I have tried multiple modems, yet they do the same thing.
My phone constantly changes from HSPA+ to 3G and back and forth. This is quite rapid, like in 5 seconds I will see it change a few times. Also, I get 'retry connection' messages a lot in Google Play and internet related apps. Non ICS roms seem to work perfectly fine.
Anybody have this? If so, did you resolve it?
Additional - I have tried installing the correct modem for my phone (the KG2) while in Darky ICS and it didn't make a difference.
Just noticed that I am also dropping calls. Tried half of the modems so far.

"Invisible" data drops with CM 9/ 10

Hi people,
I'm opening a new thread because I have not seen a post about my kind of data drops here and couldn't find any by searching.
Thing is, since switching to Cyanogenmod 9 my data dropped. However these drops are kind of "invisible" because the system bar shows H/ G/ or else, but download/ upload arrows show only sometimes and if they don't, there's no data transmission. So I have to wait all the time until finally the system seemingly randomly decides to download stuff although there is a H/ G/ ... shown.
It worked with stock ROM and Bulletproof, but this issue arose when I flashed CM 9 and also persists with CM 10. Only thing I can find that looks like it can be similar to my problem is this thread: http://forum.xda-developers.com/showthread.php?t=2034998
Today I updated my radio finally, but still no change. Checked APN settings, everything seems to be fine.
Any help is greatly appreciated.
Unrelashade said:
Hi people,
I'm opening a new thread because I have not seen a post about my kind of data drops here and couldn't find any by searching.
Thing is, since switching to Cyanogenmod 9 my data dropped. However these drops are kind of "invisible" because the system bar shows H/ G/ or else, but download/ upload arrows show only sometimes and if they don't, there's no data transmission. So I have to wait all the time until finally the system seemingly randomly decides to download stuff although there is a H/ G/ ... shown.
It worked with stock ROM and Bulletproof, but this issue arose when I flashed CM 9 and also persists with CM 10. Only thing I can find that looks like it can be similar to my problem is this thread: http://forum.xda-developers.com/showthread.php?t=2034998
Today I updated my radio finally, but still no change. Checked APN settings, everything seems to be fine.
Any help is greatly appreciated.
Click to expand...
Click to collapse
Have you tried changing your APN settings to a different one? I've had similar issues with CM to what you're describing, switched to internet2.voicestream.com, haven't had many problems since.
i had the same problem before and i called t-mobile and they took me thru step on reconfiguring the step so now i can talk and surf the web at the same time try that but if that doesnt work try reflashing the rom again
I've just been lucky and it works with CM 9 this time and continues to work through new flashes of CM 9. Well... Sadly I don't know what went wrong, but it works now
Still want to answer you guys for archival purposes and if someone looks for a solution... and thanks for replying, it means a lot to me!
I live in Germany and imported the phone, it hasn't been sold here. So I can't ask for technical support.
I looked after the APNs but they were already the ones described as by my carrier.
So... Problem solved... for now. And thanks again!

Blaze Signal Keeps Going Out Problem(On Any ROM!)

So here's my issue, my Galaxy S Blaze has been switched from ROM to ROM constantly, I have seen ROMS with modified build.props, other added features, and a bunch of other tweaks, you name it! I don't know what all those tweaks mean, I have no idea if it could affect the way my phone receives the signal but it got me so frustrated that I kept switching roms until finally then I went back to stock and am no longer am switching to another ROM.
Here's a history of the ROM switching I've made in the past couple of months:
1st - MIUI
2nd- Cyanogenmod
3rd- Gummy ROM
4th- Liquidsmooth ROM
5th- Cyanogenmod
6th- Dirty Unicorns (problems with signal started occurring right about here, and onwards)
7th- Stock ROM (hmm... nope nothing fixed.)
8th- Validus (still no, I didn't like the constant force-closing of many apps)
9th- Gummy ROM (nope, what's worse is my screen kept freezing if I had atleast 2 apps open and I slid down the notification drawer)
10th- Cyanogenmod (well, maybe switching to cyanogenmod will fix it)
11th- Gummy ROM (*sigh* switching back? Nope, still didn't help my signal)
12th- Stock ROM (you would expect it to be fixed right about here, but nope)
So what's up what is the exact problem with my signal? Here's the thing: My signal works! That's a start atleast. However, if I turn on my Wi-Fi while I'm home, I can still call/text people, all of that works. But after maybe 2 hours or so, the signal bar is still there, it's telling me it has signal and it's connected, SOMETIMES it will be empty meaning I have no signal(when I really do). But in reality, I can't receive texts, nor calls, none of that. So how do I fix it? By restarting my phone sadly, that has been the only solution for me for these past 2 months. People have complained to me because I don't answer my phone anymore, well I'm sorry my phone can't receive those calls due to this messed up signal. There are 3 other T-Mobile phones in the house that have no problem! The problem here is with my Blaze phone.
So what if I turn the Wi-Fi off for the whole day and see if it's the main thing causing the issue? Well, I did this. Turns out that the signal stays on longer than when I'm on Wi-Fi but it still goes out. I have switched SIM Cards, I have tried switching my APN: from "epc.tmobile.com" to "fast.t-mobile.com" but the problem appears to happen more quickly on the "epc" one than the "fast" one. Please help me with this, this has been frustrating me a lot lately. I'm not sure if anyone has even had the same exact problem that I'm having, I've searched online but haven't seen a similar problem.
Some of you might say, wow that is a lot of ROMS you've switched to, I'm sure there were more that I missed but that's as of recent. I can install ROMS correctly, I know how to use CWM when installing a .zip and using Odin when it's a .tar(or other supported file extensions). I've factory reset, wiped the cache, the dalvik cache, all before installing a new rom. After installing each rom, I've also factory reset and wiped the cache to make sure no other problems could affect the way the rom would work. Hopefully I did the procedure right, thanks for anyone who's willing to help me!
Right now I am running:
Baseband Version:
T769UVLH5
Kernel Version:
3.0.8-perf-T769UVLH5-CL990184
[email protected] #1
SMP PREEMPT Fri Aug 17 15:12:14 KST 2012
Android Version:
4.0.4
Another Issue is that I can't even transfer files to and from my phone when connected to my computer! This is another big issue, here are some images:
http :// i.imgur.com/xx699ss.png
http :// i.imgur.com/1wRzJpX.png
Here's what happens when I turn Wi-Fi Calling on but maybe it's just a built-in function that I forgot it had and it's probably normal:
http :// i.imgur.com/cTSqRci.png
By the way, sorry for the links just copy and paste them in a browser to and remove the spaces between the http :// and i.imgur, thanks! Unfortunately, I can't post links until I reach 10 posts. If the links don't work for you, I've also provided attachments.
Many thanks!!!
That last picture does show the proper function of Wi-Fi calling however I don't know what to say about the rest of your problems.
Sent from my SAMSUNG-SGH-T769 using XDA Free mobile app
There are two things I would recommend trying...
1. Use Blackhole System Wipe
I know you've been following all the proper steps in CWM (and I would say to keep doing so), but I've added using Blackhole, in addition to the first steps, and I always get great system performance on my phone, and my parent's phones (I put them on ProvisionMod after stock was being stupid). It works well for pre installation for ANY ROM and helps prevent pesky issues. However, chances are, your issue is baseband related and this probably won't solve it... But still! You never know! It's worth a shot!
2. Reroot your phone
I know this will be annoying and pesky... but sometimes the process goes wrong from the beginning and starts giving issues later on... When I first rooted my mom's blaze, something went wrong, despite my following all the directions, and one of her partitions was completely disabled, no matter the ROM. I redid the process of rooting her phone (not from GB though... From the ICS stock) and fixed the issue instantly! I would try these two steps first and see if they do anything! Good luck!
Sent from The Doctor's Blaze

Intermittent Data/Cell -Exclamation Mark in Signal Indicator

This happens on every Lollipop ROM I have flashed, no problems on 4.4 ROMS. I do clean installs, do not restore anything from Tibackup. So basically what happens is I will randomly but very frequently lose all data and cell service. Like once every three minutes frequently. It only lasts about 5 seconds at a time. The signal bar triangle will have an exclamation mark in it (see attached example). I delete and re-enter my APN, turn off wifi AND the Scanning Always Available option. I have read some threads about this exact same thing happening on Nexus 5 after Lollipop update but they are old and it seems to have been fixed with an update. Does anyone have any ideas about what is going on? I'm on TMO in the US and like I said, it ONLY happens on Lollipop ROMs it does not happen of Kitkat.
I read this as sort of an explanation as to why but nothing as to how to fix it. It is driving me insane.
I'm in the same boat, I cant make calls with hangouts or with Dialer or it will disconnect. I haven't seen a solution yet. I've tried every ROM I can, but it keeps crashing. drives me up a wall. I want to logcat it, but having issues while at work.
budm said:
I'm in the same boat, I cant make calls with hangouts or with Dialer or it will disconnect. I haven't seen a solution yet. I've tried every ROM I can, but it keeps crashing. drives me up a wall. I want to logcat it, but having issues while at work.
Click to expand...
Click to collapse
Only discussion about this I have seen is in the Nexus 5 forums, nothing in OPO
Any insight to this would be greatly appreciated.
Come on guys, am I really the only one with this issue?
TigerDNA said:
Come on guys, am I really the only one with this issue?
Click to expand...
Click to collapse
You're not alone, I have this as well but I don't get the exclamation mark but instead the triangle appears completely empty, as if I have no signal at all.
anyone know a way to fix this awell? i flashed the new lolipop alpha modem and still same thing if not worse
The only time this has happened to me is when I toggle Wi-Fi. It for this every time, but have no data issues otherwise. Seems to be when switching between ip addresses. Are you possibly between towers or roaming on another network? May be the issue, but I can't say for sure. Running the lollipop rom exodus, no issues at all.
EDIT: also what baseband are you guys on? I thought I saw something similar and someone flashed a test baseband and it fixed whatever issue they were having. Link coming shortly.
EDIT 2: just now noticed the list above mine about the alpha modem and it not working for them. If anyone else needs to try however, link is http://forum.xda-developers.com/sho... work for some and not others.
from the one+
Does anyone know if we can flash the CM11S modem on CM12?
Go to Settings -> More - > Mobile Networks. Make sure all the items are set correctly.
alleykat2561 said:
Go to Settings -> More - > Mobile Networks. Make sure all the items are set correctly.
Click to expand...
Click to collapse
In OP "I delete and re-enter my APN, turn off wifi AND the Scanning Always Available option."
Same issue here. Running SlimSaber using alpha radio.
Same problem on two OPOs here, both running Temasek CM12
Anyone found a solution yet?
I have the same issue on CM12, BlissPop and Validus ROMS.
Strangely I do NOT have the issue on Euphoria.
Think it happened after I flashed the Alpha L modem.
Tried flashing an older CM11S modem, but no luck...
Hi,
Sorry for the noob answer but anybody tried settings>mobile networks>preferred network type and set it to 3G? I flashed a new rom from stock CM and noticed that I was experiencing signal trouble, I checked my status and the signal detected is LTE so I changed my network to 3G and network signal improved. Downside is that you cant use LTE (but thats ok for me since here in our country, LTE signal is still kind of limited)
Zino same for me. Ever find a fix or a rom that doesn't do this?
OP here, it's strange that all of us have this issue, the same issue that came up on the Nexus 5 thread when L was first released but know one else seems to have any knowledge of it. I am almost certain it doesn't have to do with our carriers but rather something software related.
I'm also suffering from this issue, until now the only way I knew how to fix it was to wipe the cache in recovery which takes ages!
got the same problem :<
I have a similar issue. I use t mobile in the USA and LTE works, H+ works, but 3g shows signal and won't load anything. No idea how to fix it.

[Q] Connectivity issues on Nexus 5

Hi,
I have serious connectivity issues with my Nexus 5.
Most of the time I am only picking up 2G signal, sometimes the connection drops compeltely. However, I had a very unstable 3G/H/LTE connection for a few minutes sometimes in the last days.
This started after changing the battery and upgrading from Cyanogenmod 12 to 12.1. Unfortunately I did both changes at the same time, so I am not sure what caused this problem.
The following things I could rule out/test:
- Another phone (Nexus 4) picks up H+ with my sim
- My phone doesn't pick up 3G/H/LTE with another (working) sim
- I have checked the connections of the both cables running alongside the battery, I also checked the cables itself.
- I fiddled with the apn settings, also I never touched them before and everything worked fine.
- I have updated the radio image.
The one thing I couldn't try is flashing an older cyanogenmod 12, because I have no backup and couldn't find one online.
Does any of you have any ideas what I can do?
I would be really thankful for any kind of help.
Who is your carrier :/
I probably should have added that in the first place.
My carrier is T-Mobile in germany.
I have the same problem. Also i'm tryed flash Android 5.0 and Android M, in stock i have Android 5.1.1. Who khow how to fix this ?
I have no solution yet. The next thing I want to try is to roll back to Cyanogenmod 12, but I guess I am going to build it myself because it seems to have vanished from the internet.
I do occasionally get LTE, but it is very unstable and doesn't work most of the time.

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