Develop Bugs

Random data/signal losses... Will custom Rom Fix?

Hey guys... as it says in the title, I am having issues with my G-nex randomly losing connection/signal but then coming back again. From what I have read, this is a common problem... anyone have any tips? Also wanting to know if I flash a custom ROM if that would possibly fix the problem. Thanks!

Not necessarily the ROM, but the radios. Try that.
There are a few 4.0.4 ROMs for the LTE GNex out now you could try as well if you want to go the ROM route.

Is this happening to you? (See attachment)
If so.. I've been trying multiple radios and multiple roms all day without any progress, this still happens. Would love it if someone has a solution to this... I'd have having to send in my phone again.
The signal issues seem to stop when the phone is awake though... :/ But I'm missing a lot of phone calls since my phone is "off" when people try to call me.

XanderDelores said:
Is this happening to you? (See attachment)
If so.. I've been trying multiple radios and multiple roms all day without any progress, this still happens. Would love it if someone has a solution to this... I'd have having to send in my phone again.
The signal issues seem to stop when the phone is awake though... :/ But I'm missing a lot of phone calls since my phone is "off" when people try to call me.
Click to expand...
Click to collapse
yeah, that's exactly what's happening... it does seem to happen more when the phone is off, but I think it still happens when it is on. it is so weird! I went into the verizon store, one of the reps said that he had just been having this issue today and that he put it into airplane mode and back off again and it seemed to fix the problem... I did it, and it seems to have helped, but that was only about 20 min ago lol. see if it helps you!

in_dmand said:
yeah, that's exactly what's happening... it does seem to happen more when the phone is off, but I think it still happens when it is on. it is so weird! I went into the verizon store, one of the reps said that he had just been having this issue today and that he put it into airplane mode and back off again and it seemed to fix the problem... I did it, and it seems to have helped, but that was only about 20 min ago lol. see if it helps you!
Click to expand...
Click to collapse
Hmm.. interesting. The problem here is that this started on March 24th... :/ But, still trying Airplane mode, even though I'm not optimistic..
I emailed my provider, asking them for info, but a friend of mine has been working beside me for the past few days, on the same network with the same phone, without problem. So I guess it's time to bring it in..

Thanks for the info! I may try to put the latest rom/radio on it and see if that helps... if not i'll un-root it and send it in I guess.

I'm having a similar issue with my GSM model, It started when my phone was updated to 4.0.4. Phone signal suddenly drops and comes back again in less than 10 seconds. Sometimes it happens with 1 minute intervals between signal losses, sometimes 5 or 20 minutes, it's very random. After noticing the issue thanks to "Light Flow" that blinks the notification light in white when there is a signal loss, I installed this app (https://play.google.com/store/apps/details?id=com.smartandroidapps.missedcall&hl=en) to track it properly. The results are very frightening, I'm about to do a full wipe in hopes that the issue will be gone :|
ps: like you guys, I did notice that it's very most likelly to happen while the screen is off. Actually, it has never happened while the screen was on.

Same here, post 4.0.4 update on my GSM GNex.

Found this explanation....

IMM76I and STILL LOSING SIGNAL

Hello, with IMM76D I hadn´t the common problem of losing signal when the screen going off. But, I experienced that sometimes, when I was using the phone, the signal goes off during 2 seconds or so (WIFI also).
So, I have experienced that IMM76I doesn´t resolve the problem.
Have you ever noticed that?

Yup I keep losing signal as well on IMM76D. Both wifi and 3G. However it seems to have gotten better on the latest cyanogenmod nightly I flashed
Sent from my Galaxy Nexus using XDA

OH!!!!!!!! very bad news !!!!!!!!!!!!!!!!!!!!!!

IMM76D is not supposed to fix that problem. Only the screen off problem.
But it would be nice if they fixed both surely.

Still on 4.0.2 and won't let me update but I guess no need to because it does not solve this problem.
I think may 3 will solve my gn problem lollllllll for the people with no internet the galaxy s 3 will be shown lol
Sent from my Galaxy Nexus using xda premium

I never had the mobile network bug until today, but often since the 4.0.1 the wifi bug, that disconnects randomly when the phone locks (also if i selecter "always on" in the advanced settings). I still have this bug.
Today, with 4.0.4 IMM76I, when i was browsing the web, also the mobile network bug happened.
Pratically, when i was browsing (so NOT when the phone was locked) the phone completely lost signal (and so, 3G connection), and then it got it (signal) about 10 seconds later.
This has happened 2 times in about 15 minutes.
What i must think?

matteventu said:
I never had the mobile network bug until today, but often since the 4.0.1 the wifi bug, that disconnects randomly when the phone locks (also if i selecter "always on" in the advanced settings). I still have this bug.
Today, with 4.0.4 IMM76I, when i was browsing the web, also the mobile network bug happened.
Pratically, when i was browsing (so NOT when the phone was locked) the phone completely lost signal (and so, 3G connection), and then it got it (signal) about 10 seconds later.
This has happened 2 times in about 15 minutes.
What i must think?
Click to expand...
Click to collapse
I've never had this issue until yesterday. I would lose reception completely after less than a one minute phone conversation. I reflashed my rom multiple times and nothing helped.. I finally restored my very first nandroid and the signal loss disappeared

Losing the wifi or 3g signal during browse the net and to get it back since 4.0.1 is not the same that the signal is gone during the phone sleeps.
Signal issue during sleep is from 4.0.4 only.
Please avoid making disturbance by misunderstanding and mix up different things.

I don't know if i'm the only one but..i noticed that the colors have improved in this last update(IMM76I).....

taylerdurden said:
Hello, with IMM76D I hadn´t the common problem of losing signal when the screen going off. But, I experienced that sometimes, when I was using the phone, the signal goes off during 2 seconds or so (WIFI also).
So, I have experienced that IMM76I doesn´t resolve the problem.
Have you ever noticed that?
Click to expand...
Click to collapse
I still experience it as well

I noticed that it happens on mine only when I am using a Plantronics Bluetooth headset. Otherwise both 3G and Wi-Fi don't drop on IMM76I.
Sent from my Galaxy Nexus using XDA

We don't need two threads on this.
Nonetheless:
IMM76I was just a kernel. The kernel reverts the radio and voltage changes.
If folks really believe that IMM76I was not a fix, they could easily run an old 4.0.3 kernel. If it fixes it, then the problem is IMM76I, if it does not, then they are pointing their finger in the wrong direction.
Here is a 4.0.3 image I found. Fastboot it.
Code:
adb reboot bootloader
fastboot boot boot.img

Does the sleep problem affect 4.0.4 users in the US? It seems like mostly europe and other countries? Anyone in US having that problem?

europe/maguro: no drops on stock IMM76D/stock IMM76D+fugumod, nor on cm9+fugumod. no drops on IMM76I as well..
Sent from my Transformer Prime TF201

[Q] Anyone else seeing their NFC turn off randomly?

It doesn't have anything to do with rebooting, I just checked it, it's been on since yesterday and I rebooted this morning and it's still on.
I'll be going through the day, and then I'll go to scan something and I'll find out the hard way it's turned off. It's a pain to have to go into settings and turn it back on.
Looks like S-Beam might be turning itself off, too. I don't ever use that but it's off right now and I know I had it enabled at one point.
Running stock but rooted 4.1.1 JRO0C3.T889UVALJ1

PockyBum522 said:
It doesn't have anything to do with rebooting, I just checked it, it's been on since yesterday and I rebooted this morning and it's still on.
I'll be going through the day, and then I'll go to scan something and I'll find out the hard way it's turned off. It's a pain to have to go into settings and turn it back on.
Looks like S-Beam might be turning itself off, too. I don't ever use that but it's off right now and I know I had it enabled at one point.
Running stock but rooted 4.1.1 JRO0C3.T889UVALJ1
Click to expand...
Click to collapse
I know it turns itself off on my S 3 after there has been no activity for a while and it may also on the Note 2.

That's really frustrating, the thing I like about nfc is it's quick and easy. Is there any way to tell it to knock that off?
Sent from my SGH-T889 using Tapatalk 2

This is something I'm seeing too. It's annoying but easy enough to turn back on.

I'll look into tasker or something like that. If anyone finds a better way to keep this from happening, I'd love to hear it!
Sent from my SGH-T889 using Tapatalk 2

Mine does same, randomly turns off NFC & S-Beam.
Sent from my SGH-T889 using Tapatalk 2

That's it?!
Did anyone find anything?! Solutions, ideas?! Hacks?! Nothing since mid-November?!? What the hell?!??

I've had the problem on the official TMO rom also. I've solved my problem by flashing the stock 7105 4.1.2 image on top (which also comes with some additional features such as NFC notification toggle). I used the stock image created by teshxx.
http://forum.xda-developers.com/showthread.php?t=2072453

Seriously? There is no way to fix this annoyance outside of flashing to a specific rom image?
Jinra321 said:
I've had the problem on the official TMO rom also. I've solved my problem by flashing the stock 7105 4.1.2 image on top (which also comes with some additional features such as NFC notification toggle). I used the stock image created by teshxx.
http://forum.xda-developers.com/showthread.php?t=2072453
Click to expand...
Click to collapse
My wife has a Galaxy S3 and she DOES NOT seem to experience this annoyance. I have the Galaxy Note 2 and I am CONSTANTLY having to turn my S-Beam and NFC back on.
Has anyone figured out what exactly causes the auto-off of these features? My random guess, using the test case of my phone and my wife's, is that it has to do with turning your wifi on and off. I am constantly turning my wifi on and/or off depending if I'm in a known wifi area. My wife never touches the wifi setting, just always leaves it on.
Anyway, hope to hear from someone soon with a solution to this annoying little glitch in the use-case of these great features.
Jz.

NFC turning off randomly...
Having the same issue as well, using the stock ROM, rooted, I'd rather not have to flash another rom to my device, as everything else appears to be working just fine for me.
At any rate, I home someone can find some kind of info here...
I'm in the US, my carrier is Sprint (I know this is a T-mobile thread)
Here's the "about phone" page:
Model Number: SPH-L900
Andriod Version: 4.1.1
Baseband version: L900VPALJC
Kernel Version:
3.0.31-434243
[email protected]#1
SMP PREEMPT Wed Oct 31 15:57:07 KST 2012
Build Number: JRO03C.L900VPALJC
Hardware Version: L900.09
Thanks in advance

[SOLVED?] GSM freezing not recieving calls/sms / No radio wake / wrong clock

Well, for the moment ICS (any version) is making my phone unusable as a phone itself.
I saw some people complaining about the GSM hangups (including me), so if you let the phone sleep, you wont recieve any call. The caller will hear the same tones, as if you dont pick up the call. If you send an sms on a phone in such state, it will only appear after turning it on manually (often having duplicate SMS). When you turn the phone on - you wont even get a missed call, no signs of anything.
This problem is very hard to reproduce, it happens from time to time.
I've tried to flash any other ICS based rom on the phone - any has the same problem. The only rom i hadn't such issue is 2.3 stock/modified. But i want ICS!
Anyone have any thoughts, what can be causing this? I'm tired of this happening, people complain that the cant tell me something urgent, and i dont even know they wanted to.
UPD: There is a parial fix for this issue by Maruzko by installing an app that prevents deep sleep (but thats battery consuming offcourse).
I think that there should be some internal fix for this issue, only devs can help up with that.
UPD2: My opinion that problems that people have with clock not synced is somehow connected, coz when you turn on the phone in that state, you see the clock changing rapidly and stopping at wrong time, so changed title to include that also.
UPD3: There is an alternative way to fix the issue, but not much tested. Thanx to sideshow03.
Tests and reports are much appreciated.

Hey! I'm having the same issue as you. I'm surprised no one came up with a solution yet.

kekehi said:
I'm surprised no one came up with a solution yet.
Click to expand...
Click to collapse
Yup, me too. Currently at miui based on pac rom, havent noticed the issue, but cant be sure its really gone, or just "lucky time" until reboot.
Sent from my SGH-I927 using xda app-developers app

I'm having the same issues on a couple roms but later on today I'll flash CM10.1 and see if it goes away...

Just did with cm10.1

im in the club

braintweaker said:
Well, for the moment ICS (any version) is making my phone unusable as a phone itself.
I saw some people complaining about the GSM hangups (including me), so if you let the phone sleep, you wont recieve any call. The caller will hear the same tones, as if you dont pick up the call. If you send an sms on a phone in such state, it will only appear after turning it on manually (often having duplicate SMS). When you turn the phone on - you wont even get a missed call, no signs of anything.
This problem is very hard to reproduce, it happens from time to time.
I've tried to flash any other ICS based rom on the phone - any has the same problem. The only rom i hadn't such issue is 2.3 stock/modified. But i want ICS!
Anyone have any thoughts, what can be causing this? I'm tired of this happening, people complain that the cant tell me something urgent, and i dont even know they wanted to.
Click to expand...
Click to collapse
I have the same 'No response to a call' issue after flashing AT&T UCLJ3 rooted on a Rogers i927R Glide.
Essentially, after the Glide has been idle for a while, not sure how long, at least 30 mins I think,
there is no response from the Glide when calling it, and it goes to voice mail, but not straight away though.
I can hear a ringing tone from the phone I'm calling from, but the Glide just sits there in sleep mode.
Try several calls but the Glide does not wake up.
Haven't tried sending it an SMS when this has happens though.
If I then wake up the Glide manually, and then put it into standby again and call it, it responds as normal and starts ringing.
The thing is, it doesn't happen every time, sometimes the phone could be idle for 2 hours and still respond to a call, others times it doesn't after say 30mins on standby.
Hard to troubleshoot as its so intermittent.
This did not seem to happen on stock Rogers GB.

braintweaker said:
Well, for the moment ICS (any version) is making my phone unusable as a phone itself.
I saw some people complaining about the GSM hangups (including me), so if you let the phone sleep, you wont recieve any call. The caller will hear the same tones, as if you dont pick up the call. If you send an sms on a phone in such state, it will only appear after turning it on manually (often having duplicate SMS). When you turn the phone on - you wont even get a missed call, no signs of anything.
This problem is very hard to reproduce, it happens from time to time.
I've tried to flash any other ICS based rom on the phone - any has the same problem. The only rom i hadn't such issue is 2.3 stock/modified. But i want ICS!
Anyone have any thoughts, what can be causing this? I'm tired of this happening, people complain that the cant tell me something urgent, and i dont even know they wanted to.
Click to expand...
Click to collapse
Should this thread be merged into this one ?
http://forum.xda-developers.com/showthread.php?t=2057948

Yup, the threads are the same, but mine is older
Sad thing - cm and other jb roms higher than 4.0.4 have the issue aswell
Currently have the 312 min value with interactive governor - this does not help, some deep sleep problem not frequency related

braintweaker said:
Yup, the threads are the same, but mine is older
Sad thing - cm and other jb roms higher than 4.0.4 have the issue as well
Currently have the 312 min value with interactive governor - this does not help, some deep sleep problem not frequency related
Click to expand...
Click to collapse
It doesnt appear to be just a Glide problem with ICS from internet searching but there doesnt appear to be a solution anywhere.
I found a reference to using an App called Wake Lock which some have found may fix it but at the cost of some battery life.
https://play.google.com/store/apps/...t#?t=W251bGwsMSwxLDMsImV1LnRoZWRhcmtlbi53bCJd
Choose PARTIAL_WAKE_LOCK in the config apparantly.
Ive installed it but not activated it yet.
Still testing with WiFi sleep policy set to "Only when plugged in", where as previously I had it set to "Always".

Anyways, there are devices on ICS that do not have such issue. May this be connected only with the tegra2 platform? Even have no idea how is this issue called to search.. sleep of death? As i know, its the state, when device does not wake at all, even after pressing power. Not our case.

braintweaker said:
Anyways, there are devices on ICS that do not have such issue. May this be connected only with the tegra2 platform? Even have no idea how is this issue called to search.. sleep of death? As i know, its the state, when device does not wake at all, even after pressing power. Not our case.
Click to expand...
Click to collapse
Good point, maybe it is to do with the Tegra 2 platform or the sub revision of this ICS 4.0.4.
Yes, 'sleep of death' seems something different, when ieven the power button does not wake it.
I think our issue is referred to as not coming out of 'deep sleep' when a call/sms is supposed to wake it up.
Yesterday I had WiFi sleep policy set to be on only when on charge.
So all day I was on 3G data not WiFI. I called the Glide intermittently through out the day and it always woke up.
Today going back to normal setting of WiFi Always on to stay connected to an access point when in sleep mode. Will see how that goes.
Next I'll try:
https://play.google.com/store/apps/...t#?t=W251bGwsMSwxLDEsImV1LnRoZWRhcmtlbi53bCJd
Choose PARTIAL_WAKE_LOCK in the config apparently.

I don't have any issues with that.. sounds like a sysctl or build.prop mod though.. that's all I have changed myself without the community here.. everything works well in ICS and I do run litekernel 1.1.1 which may also be a + for the no hang issue

Maruzko said:
I have the same 'No response to a call' issue after flashing AT&T UCLJ3 rooted on a Rogers i927R Glide.
Essentially, after the Glide has been idle for a while, not sure how long, at least 30 mins I think,
there is no response from the Glide when calling it, and it goes to voice mail, but not straight away though.
I can hear a ringing tone from the phone I'm calling from, but the Glide just sits there in sleep mode.
Try several calls but the Glide does not wake up.
Haven't tried sending it an SMS when this has happens though.
If I then wake up the Glide manually, and then put it into standby again and call it, it responds as normal and starts ringing.
The thing is, it doesn't happen every time, sometimes the phone could be idle for 2 hours and still respond to a call, others times it doesn't after say 30mins on standby.
Hard to troubleshoot as its so intermittent.
This did not seem to happen on stock Rogers GB.
Click to expand...
Click to collapse
I'm running CM10.1 and not having this issue.
I did notice something though.
Hypothesis: Each ICS leak came with a different baseband. So there is an I927UCLG9 baseband, a I927UCLH2 baseband, and a I927UCLJ3 baseband. UCLJ3 introduced some ABI change that the libsec-ril we're using in AOSP ROMs doesn't know how to handle (or it straight up just has a bug).
I currently have the I927UCLH2 baseband as I never flashed UCLJ3.
Could someone more wizardlike than me whip up some baseband-only Odin images for testing?
---------- Post added at 02:18 PM ---------- Previous post was at 02:15 PM ----------
braintweaker said:
Anyways, there are devices on ICS that do not have such issue. May this be connected only with the tegra2 platform? Even have no idea how is this issue called to search.. sleep of death? As i know, its the state, when device does not wake at all, even after pressing power. Not our case.
Click to expand...
Click to collapse
"Sleep of death" already has an established meaning. It means there's an intermittent whole-system freeze that only happens when the device is in standby, giving a "dead" appearance. It's been the bane of Kindle Fire developers for some time now.
I'd call this "no radio wake" personally.

roothorick said:
Could someone more wizardlike than me whip up some baseband-only Odin images for testing?
...
I'd call this "no radio wake" personally.
Click to expand...
Click to collapse
Nice term, tottaly agree.
I just can say, that I have tested the lite rom, based on 4.0.4, that has a baseband chooser in aroma installer. I've tried running it with a baseband from 2.3.6 stock rom (that was my only hope), that did not give any difference, radio still did freeze Anyway, I cant be sure I did everything right that time, and your way of solving this must be tested.
Also, my thoughts are about some ATT frequency specific things, as I cant say everybody here is complaining (most are from North America, right?). May this be caused by using glide outside of US and Canada?

braintweaker said:
Nice term, tottaly agree.
I just can say, that I have tested the lite rom, based on 4.0.4, that has a baseband chooser in aroma installer. I've tried running it with a baseband from 2.3.6 stock rom (that was my only hope), that did not give any difference, radio still did freeze Anyway, I cant be sure I did everything right that time, and your way of solving this must be tested.
Also, my thoughts are about some ATT frequency specific things, as I cant say everybody here is complaining (most are from North America, right?). May this be caused by using glide outside of US and Canada?
Click to expand...
Click to collapse
That's quite possible, as I'm on AT&T towers even though I don't have service through them (I'm with a prepaid MVNO) and I'm not having problems.

roothorick said:
That's quite possible, as I'm on AT&T towers even though I don't have service through them (I'm with a prepaid MVNO) and I'm not having problems.
Click to expand...
Click to collapse
I'm also on AT&T towers but I don't have service through them, I'm with a prepaid MVNO just like you but I'm having these problems

yivkhar said:
I'm also on AT&T towers but I don't have service through them, I'm with a prepaid MVNO just like you but I'm having these problems
Click to expand...
Click to collapse
What is your baseband version (under About Phone)?

roothorick said:
What is your baseband version (under About Phone)?
Click to expand...
Click to collapse
I927UCLJ3

braintweaker said:
Well, for the moment ICS (any version) is making my phone unusable as a phone itself.
I saw some people complaining about the GSM hangups (including me), so if you let the phone sleep, you wont recieve any call. The caller will hear the same tones, as if you dont pick up the call. If you send an sms on a phone in such state, it will only appear after turning it on manually (often having duplicate SMS). When you turn the phone on - you wont even get a missed call, no signs of anything.
This problem is very hard to reproduce, it happens from time to time.
I've tried to flash any other ICS based rom on the phone - any has the same problem. The only rom i hadn't such issue is 2.3 stock/modified. But i want ICS!
Anyone have any thoughts, what can be causing this? I'm tired of this happening, people complain that the cant tell me something urgent, and i dont even know they wanted to.
Click to expand...
Click to collapse
I'm having this issue too ;(

Possible jelly been signal drop fix!

My problem: randomly stumbled upon the notorious phantom menace radio signal antenna drop that plagues jelly bean owners. My particular case ; if i opted to turn off "data" to save power etc then every five minutes the antenna would drop for maybe thirty seconds then come back (all actions monitored via gs battery monitor app).
What I tried previous to my supposed "fix ":
-I'm running cross platform roms currently synergy, knowing that I figured it was my d2att recovery image which I later flashed, it fixed my build.prop but that was it
-flashed back to stock recovery... No go (fyi I've owned the phone since it was new back in August, ran jb for months with no issues until several weeks ago when this began
-flashed and wiped many roms several times over with no fix
-flashed every Att fix possible along with the pages of thread research that went with it
- worked about every angle of network settings I could've imagined
It wasn't until recently I had decided to disable the phones stock power saving switch when I realized my antenna was stable once again! Upon toggling it back on the problem will resume.

update... this hasn't fixed **** as of now. don't know what happened it was working fine now it's back to its same ****.smh....
the only choice I have is to leave data on :_(

ghost0211 said:
update... this hasn't fixed **** as of now. don't know what happened it was working fine now it's back to its same ****.smh....
the only choice I have is to leave data on :_(
Click to expand...
Click to collapse
have you tried a different modem? try downgrading or updating respectively

hapticxchaos said:
have you tried a different modem? try downgrading or updating respectively
Click to expand...
Click to collapse
yes I have. thanks though
I recently discovered that this trick does work but it's intermittent. in order to stabilize the antenna I believe the connection had to of held a steady 4g signal for a brief period before killing power save them the data. but once that's accomplished its good until power is cycled off. it's weird, can anyone make sense of this?

ghost0211 said:
yes I have. thanks though
I recently discovered that this trick does work but it's intermittent. in order to stabilize the antenna I believe the connection had to of held a steady 4g signal for a brief period before killing power save them the data. but once that's accomplished its good until power is cycled off. it's weird, can anyone make sense of this?
Click to expand...
Click to collapse
that honestly sounds like a defective device. thats just my thoughts

I think so it's just odd that it went this long before acting up