Develop Bugs

GSM - GNEX Signal Drop Solution - Working ROM,Radio,Kernel combos. POST HERE...

***EDIT*** I believe that I have found the solution to this issue (at least for me) by flashing the FuGuMod Kernel as advised to do by 2 users (jetrii and slyydrr) who advised me of this in the following thread here http://forum.xda-developers.com/showthread.php?t=1487056 on pages 7 and 8 respectively.
This fix may NOT work for you but I can say that it has worked for me. Please see post #33 (and onward) in this thread.
I have painstakingly been trying to find a solution to this issue and it SEEMS as if I have FINALLY found one so if I have helped you in any way then I ask that you please press the "Thanks" button and please visit the thread above and say thanks to jetrii and slyydrr as well. I also recommend that if this works for you that you go to the FuGuMod thread here http://forum.xda-developers.com/showthread.php?t=1438417 and pay tribute to nikademus for his kernel!!! I know I sure have... Also... Make SURE that you flash the correct kernel version for your ROM ie: 4.0.3 ROM = 4.0.3 Kernel, etc...
Thanks...
Hi everyone,
I have decided to start a fresh thread here as I have seen (and replied to) many threads regarding people with the GSM version of the GNEX (like I have) that are suffering from random signal loss of both data and GSM services for apparently NO REASON.
If you are also experiencing these issues I ask that you please post them here so that they are easy to follow and I also ask for anyone with ANY answsers to please post them here as well. Also... Please post what firmware you are running and any steps you have tried to fix this issue be them a failure or a success. I have done the following...
I am currently on the FoxHound v1.0 AOSP 4.0.3 firmware and experience these random signal drops. I have flashed NUMEROUS radios / modems to try and fix this with no success. I had been told by someone that the issue MAY be a BUG in the 4.0.3 AOSP ROMS but I have a hard time believing this as some people do NOT experience these same issues while on 4.0.3 ROMS.
What did work was to flash to the Android Revolution 4.0.2 ROM and on this I do NOT experience these random drops which COULD mean that the problem DOES lie in the AOSP builds of 4.0.3 but again... I have a difficult time believing this but it could be true. Also... Stock firmware (4.0.1) for me here in Canada does not experience these random signal losses either.
This is very annoying as I want to run the 4.0.3 custom ROMS for their customization capabilities, etc but I cannot keep my device in a USABLE state when on 4.0.3 so I have to go back to my trusty SGSII.
Again, please post here to voice your concerns and opinions on this and perhaps SOMEONE will be able to find us a solution.
Thanks,

are you using your carrier supplied radio?

s2d4 said:
are you using your carrier supplied radio?
Click to expand...
Click to collapse
Yup. Im on UGKL1 which is the radio that shipped on my device. I have also tried other radios (XXKL1, UGKK7, XXKG6, etc) as I mentioned as well and I still experience the same issue and others have mentioned the same things as well with no successes.

There was this one time that I had lost signal randomly (while on stock unmodified out of the box ICS) but I was able to get it back with a factory reset. After that it never happened to me again.

jonnyg1097 said:
There was this one time that I had lost signal randomly (while on stock unmodified out of the box ICS) but I was able to get it back with a factory reset. After that it never happened to me again.
Click to expand...
Click to collapse
Thanks for the comment. May I ask what Radio your device has on it? Are you running any sort of custom ROM now? If so, what are you running?

Right now the radio is KK6 (im on stock yakju 4.0.2 now) but at the time it was what came with the phone (shipped from Rogers)

jonnyg1097 said:
Right now the radio is KK6 (im on stock yakju 4.0.2 now) but at the time it was what came with the phone (shipped from Rogers)
Click to expand...
Click to collapse
Hmmmm... Interesting... You got an OTA update to 4.0.2? I have seen other posts that people here in Canada are complaining that they have not received ANY OTA updates at all... When did you get this?
Since I have been on a custom ROM I have not seen this update obviously...

I'm on GSM with Rogers as well. I haven't noticed any significant signal drops with the exception of my basement (no cell phones get signal there - its a fortress lol). I am on 4.0.3 as well. I have read that the 4.0.4 has improved radio... so it may be worth looking into. I saw a WIP 4.0.4 GSM Rom here.

I've been experiencing this as well. I'll have a great signal, then suddenly it totally disappears, and after a few seconds the signal comes back. It's even happened during voice calls as well. I experienced this on the stock device (4.0.1). I'm now using the GummyNex rom on 4.0.3 (w/ a stock radio), and I'm still experiencing these random signal loses. (T-mobile USA in NYC, btw).
It's not a constant problem, but it happens a few times a day. enough to be an mild annoyance.

grantith said:
I've been experiencing this as well. I'll have a great signal, then suddenly it totally disappears, and after a few seconds the signal comes back. It's even happened during voice calls as well. I experienced this on the stock device (4.0.1). I'm now using the GummyNex rom on 4.0.3 (w/ a stock radio), and I'm still experiencing these random signal loses. (T-mobile USA in NYC, btw).
It's not a constant problem, but it happens a few times a day. enough to be an mild annoyance.
Click to expand...
Click to collapse
Hmmmmm... I ONLY seem to get these signal drops on 4.0.3... Weird... You have a GSM device right? Not CDMA - LTE?

I found something new to try when I get home but if anyone may want to try it now and post your results it would be very helpful and appreciated.
This is a radio from the Japanese variant of the GNEX and most people who have tried it have had good success with it... See the link below...
http://forum.xda-developers.com/showthread.php?t=1478685

I THINK I am experiencing this. My phone keeps going from H+ to 3G non stop at the top. How can you tell if your signal is being dropped? (sorry new to this) I've seen posts with a network screen? showing connection but I can't seem to find this.

Haven't had any issues as far as that. There were times when I was using the browser and it said network error but everything still worked.
Sent from my Galaxy Nexus using XDA Premium App

mattymac said:
I THINK I am experiencing this. My phone keeps going from H+ to 3G non stop at the top. How can you tell if your signal is being dropped? (sorry new to this) I've seen posts with a network screen? showing connection but I can't seem to find this.
Click to expand...
Click to collapse
You will notice because the signal bars icon will go "completely blank" and for example... If you are on your lockscreen and you can see the name of your provider...It will disappear completely for a couple of seconds and then come back...

No I guess I am not experiencing this. I'm not exactly sure what the difference between H+ and 3G is but my phone seems to stay in 3G until it transfers data, when its transferring data, it goes into H+, then back into 3G. Maybe this is normal. I was just curious because I did flash Yakju and the radios when i bought it.

mattymac said:
No I guess I am not experiencing this. I'm not exactly sure what the difference between H+ and 3G is but my phone seems to stay in 3G until it transfers data, when its transferring data, it goes into H+, then back into 3G. Maybe this is normal. I was just curious because I did flash Yakju and the radios when i bought it.
Click to expand...
Click to collapse
Yes... That is normal...

yiannisthegreek said:
Hmmmm... Interesting... You got an OTA update to 4.0.2? I have seen other posts that people here in Canada are complaining that they have not received ANY OTA updates at all... When did you get this?
Since I have been on a custom ROM I have not seen this update obviously...
Click to expand...
Click to collapse
Well, when I first flashed 4.0.1 yakju I got notifications of being able to upgrade it OTA. However, at the time I must of messed something up when I flashed it because the updates werent successful when I went to update it. So I got fed up with it and I flashed 4.0.2 manually via fastboot.

yiannisthegreek said:
I found something new to try when I get home but if anyone may want to try it now and post your results it would be very helpful and appreciated.
This is a radio from the Japanese variant of the GNEX and most people who have tried it have had good success with it... See the link below...
http://forum.xda-developers.com/showthread.php?t=1478685
Click to expand...
Click to collapse
So I flashed this radio and I get SOMEWHAT better stability but it only accesses the EDGE network and NO 3G/H... Guess this is a no go too...

HD Rom, Latest build.
Radio - XXKK6
Had the stock radio with the HD Rom, and thought that my random lost connections on market were due to my not flashing the recommended radio. Flashed the recommended radio (current), and still experienced them. Signal is better, and oddly enough voice doesn't get lost. Phone doesn't show that there is no signal, in fact it is at 3 bars on H.
Edit: I use a regional carrier, that doesn't list APN settings. By leaving APN type blank, I seemed to have solved the problem. Also dramatically increased the signal strength (Using Network Signal app).

finch8423 said:
HD Rom, Latest build.
Radio - XXKK6
Had the stock radio with the HD Rom, and thought that my random lost connections on market were due to my not flashing the recommended radio. Flashed the recommended radio (current), and still experienced them. Signal is better, and oddly enough voice doesn't get lost. Phone doesn't show that there is no signal, in fact it is at 3 bars on H.
Edit: I use a regional carrier, that doesn't list APN settings. By leaving APN type blank, I seemed to have solved the problem. Also dramatically increased the signal strength (Using Network Signal app).
Click to expand...
Click to collapse
What is the name of this network signal app? Developers name and what does it do exactly?

Signal Drops on Wind Mobile

Hi guys,
I'm on Wind mobile in Canada (london), running AOKP 32 with franco kernal milestone 2. I've been noticing that my nexus completely drops signal once or twice a day and then picks it back up after a couple of seconds, while I'm using it. I just bought the phone about a week ago and was quick to put on 4.0.4. I've also tried the ugla4, uglc1, xxla2 modems with the issue persisting. I'm really hoping this is a software issue related to 4.0.4. Is anyone else having the problem?

mani_is_ms said:
Hi guys,
I'm on Wind mobile in Canada (london), running AOKP 32 with franco kernal milestone 2. I've been noticing that my nexus completely drops signal once or twice a day and then picks it back up after a couple of seconds, while I'm using it. I just bought the phone about a week ago and was quick to put on 4.0.4. I've also tried the ugla4, uglc1, xxla2 modems with the issue persisting. I'm really hoping this is a software issue related to 4.0.4. Is anyone else having the problem?
Click to expand...
Click to collapse
AOKP huh? Try the swagger toggle ...

blowtorch said:
AOKP huh? Try the swagger toggle ...
Click to expand...
Click to collapse
That was the first thing I tried! I'm still surprised it didn't work.

Roman himself has signal drop issues with AKOP ... i haven't had a single issue on CM9 where i have on different roms ... i'm using UGCL1 radio on Rogers and in London as well

Try setting your min CPU to 700

disabling smart reflex is usually a better option then increasing the min clock speed as that will decrease battery life. Fugumod kernel has smartreflex disabled.
I have been having this issue, although since flashing AOKP B32 and stock kernel I have not been having that issue. I wonder if he changed something in the last build. Also using UGLC1 radio.

blowtorch said:
Roman himself has signal drop issues with AKOP ... i haven't had a single issue on CM9 where i have on different roms ... i'm using UGCL1 radio on Rogers and in London as well
Click to expand...
Click to collapse
I switched to CM9 after you suggested it might be an issue with AOKP. It's a little early to tell, but I've been using CM9 for about 2 days without any issues. It looks AOKP may have been the culprit after all.

4.0.2 or 4.0.3 Factory Images

GSM Nexus - I have been having major signal issues with my phone. The signal cuts out completely and it happens very frequently. I havent really noticed it happening on 4.0.2. I have been on 4.0.4 and I have been facing this issue ever since.
I have tried radios XXLA2 and UGLA4 and I have the same issue. I am not too sure if it is a hardware or a software issue.
I have been looking for the factory images of either 4.0.2 or 4.0.3, but it seems to be taken off from Google Dev site. Any idea if there are any other places I can get them from?

There is a link in the first post of the "update" thread link in my signature.
Sent from my Galaxy Nexus using Tapatalk 2

Thank you very much.

i am facing the same problem but only on AOKP Milestone 5. I didnt face any issues with signal drops when i was using paranoid android rom. Everytime the signal drops , i have to reboot the phone. it works fine for an hour or so and then boom 3G signal is off.

help!! JB signal drop issue...

i hv been facing random signal loss issue on my stock JRO03C...it doesnt always happen but it happened quite a number of times...i was previously on yakjuxw 4.0.4 and i never face this kind of problem until now..i followed the steps in the second post of this thread http://forum.xda-developers.com/showthread.php?t=1626895 and i flash to takju with the radio and kernel...did i do anything wrong or is it just a JB bug?

ace-user said:
i hv been facing random signal loss issue on my stock JRO03C...it doesnt always happen but it happened quite a number of times...i was previously on yakjuxw 4.0.4 and i never face this kind of problem until now..i followed the steps in the second post of this thread http://forum.xda-developers.com/showthread.php?t=1626895 and i flash to takju with the radio and kernel...did i do anything wrong or is it just a JB bug?
Click to expand...
Click to collapse
2- so, you now have PRIMELC03 (bootloader version) and XXLF1 (radio), correct?
I haven't faced any signal/data drops.

I have been facing some issues as well... still trying to figure out why..
Sent from my Galaxy Nexus using xda premium

bk201doesntexist said:
1- why did you flash takju, if you're outside of the us? wallet doesn't work anywhere else, so you might have gone with yakju.
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Click to collapse
Its completely irrelevant. If you flash takju and don't live in the US, Wallet just doesn't show up. Everything else is completely exactly the same between takju and yakju. He can just flash either one.

martonikaj said:
Its completely irrelevant. If you flash takju and don't live in the US, Wallet just doesn't show up. Everything else is completely exactly the same between takju and yakju. He can just flash either one.
Click to expand...
Click to collapse
I flashed takju once, and Wallet was visible in app drawer. No worries, edited my post.

I've noticed same issue. I'm on stock yakju (PRIMELC03, I9250XXLF1, etc) - nothing custom.
What I can say more - I've noticed that problem when I was traveling (i.e driving car 400km) and maybe this is some issue when you change often gsm/cell base stations (don't know proper english name for it).

bk201doesntexist said:
2- so, you now have PRIMELC03 (bootloader version) and XXLF1 (radio), correct?
I haven't faced any signal/data drops.
Click to expand...
Click to collapse
yes i am...
weird..some ppl faced it too...

let me explain what i’m experiencing..
sometimes when i unlock my phone,the signal bar shows no signal...i hv to wait for a while then the bar will show up again..but for today,when i unlock my phone,there was no signal at all..so i waited but still ntg show up...i hv to reboot the phone and i got my signal bck..when i check better battery stats,my phone hve no signal for around 7mins...any ideas why？=（

Ive had problems a couple oftimes since ive been onjelly bean which never happened on ICS.
It happened in a shopping center the other day where i had grey bars and they would keep going from completley full to completeley empty every few seconds. My mobile data was showing the H but yet i couldnt get onto the net.
This happened again this morning when i left home and got to work. I had to reboot the phone both times to fix the issue. Turning aeroplane mode on and off didnt work.
I dont know why but ive got a feeling this has something to do with going from wifi to mobile data.
Probably completely wrong though.

zolah said:
Ive had problems a couple oftimes since ive been onjelly bean which never happened on ICS.
It happened in a shopping center the other day where i had grey bars and they would keep going from completley full to completeley empty every few seconds. My mobile data was showing the H but yet i couldnt get onto the net.
This happened again this morning when i left home and got to work. I had to reboot the phone both times to fix the issue. Turning aeroplane mode on and off didnt work.
I dont know why but ive got a feeling this has something to do with going from wifi to mobile data.
Probably completely wrong though.
Click to expand...
Click to collapse
so it wasnt just me =/
it's quite frustrating that google hvnt solve this issue...

Nope its not just you mate.
Kind of annoying when it happens. I hope it gets fixed in the future.
I would try doing a factory reset but i cant see how that would fix a radio issue.

zolah said:
Nope its not just you mate.
Kind of annoying when it happens. I hope it gets fixed in the future.
I would try doing a factory reset but i cant see how that would fix a radio issue.
Click to expand...
Click to collapse
it's funny cuz when i was on ics i never experienced this issue(maybe i didnt notice)...only on JB i started hving problems...

ace-user said:
it's funny cuz when i was on ics i never experienced this issue(maybe i didnt notice)...only on JB i started hving problems...
Click to expand...
Click to collapse
Yeah same here. ICS was fine through all of the updates. Its only happened since i hit jelly bean.

zolah said:
Yeah same here. ICS was fine through all of the updates. Its only happened since i hit jelly bean.
Click to expand...
Click to collapse
hope google fix this problem ASAP..

[Q] VZW Update JDQ39 WiFi/4g Issues????

The recent 4.2.2 upgrade has ruined my wife's wifi. Grey wifi bars until you restart the wifi. Only last for a few minutes, then Grey again. Also 4G has become spotty as well. Anyone else experience this? My Nexus is rooted running JDQ39 Cyanogenmod and am just fine.

Bump
70 views, surely I'm not the only one?
Sent from my Galaxy Nexus using xda premium

mantis92gsr said:
The recent 4.2.2 upgrade has ruined my wife's wifi. Grey wifi bars until you restart the wifi. Only last for a few minutes, then Grey again. Also 4G has become spotty as well. Anyone else experience this? My Nexus is rooted running JDQ39 Cyanogenmod and am just fine.
Click to expand...
Click to collapse
I take it your wife's phone got the OTA update? From what I've read, she needs to do a factory reset. I know it's a pain, but seems to be the only way to get the GN (especially the recent VZW OTA) to settle down. Like you, I'm running a custom ROM, but I did a full reset before installing it. No problems..