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?

Kitkat Update = Wifi Calling/Radio Issues

I posted about this briefly on the T-Mo forums, looks like I'm not the only one who is having some issues with Kitkat. Mainly, sometimes when you leave Wifi you will lose all radio signal until a reboot. Also, on Wifi Calling, usually after 20 minutes or so you can send text messages just fine but you won't receive them until you reboot.
Just want to warn anyone who is looking to update their bootloader like I did and now can't go back to the fully functional 4.3. I'm completely reliant on Wifi calling where I am so this is a bad situation.
I've also heard there are some battery drain issues in 4.4.2 with the Note 3.

no problem here if not i get better lte signal b4 i only get one 1 bar at my work now i get 3

mrej201 said:
no problem here if not i get better lte signal b4 i only get one 1 bar at my work now i get 3
Click to expand...
Click to collapse
Yeah, the signal is a little better in some areas, but I'm not sure if that's just the way the signal is displayed or if there was actually something done to improve the signal, I tend to think it's the first option.
These are mostly issues related to Wifi calling, just wanted to warn people who are reliant on it like me.

Bacardi222 said:
Yeah, the signal is a little better in some areas, but I'm not sure if that's just the way the signal is displayed or if there was actually something done to improve the signal, I tend to think it's the first option.
These are mostly issues related to Wifi calling, just wanted to warn people who are reliant on it like me.
Click to expand...
Click to collapse
Have you tried a fresh install
TWEAKED 2.0 ELEMENT V3.0 NOTE 3

Bacardi222 said:
Yeah, the signal is a little better in some areas, but I'm not sure if that's just the way the signal is displayed or if there was actually something done to improve the signal, I tend to think it's the first option.
These are mostly issues related to Wifi calling, just wanted to warn people who are reliant on it like me.
Click to expand...
Click to collapse
How did you take the update? If you're not concerned with knox flags I really suggest backup apps etc and use philz or twrp....wipe that thing till it bleeds haha...i like to follow wipes with a reboot back into revovery....(also tapping No to any requests to add root) then flash the stock deodexed or odexed if you must lol....I've not had a single hangup. ....then after loading rom set everything up and proceed to remove bloat from [system/app] AND [data/app] ....reboot....profit.
Let me add I've had my note for about 2 weeks with stock 4.3 no root nada...straight from t-mo and had about 12-15 random reboots....After update (1st took ota then said f*÷! it and rooted and slapped custom recov on him then wiped everything except external sd and flashed stock zip) Not 1 reboot ! since what...Wednesday .....wifi calling 100 %....best of luck

BACARDILIMON said:
Have you tried a fresh install
TWEAKED 2.0 ELEMENT V3.0 NOTE 3
Click to expand...
Click to collapse
louforgiveno said:
How did you take the update? If you're not concerned with knox flags I really suggest backup apps etc and use philz or twrp....wipe that thing till it bleeds haha...i like to follow wipes with a reboot back into revovery....(also tapping No to any requests to add root) then flash the stock deodexed or odexed if you must lol....I've not had a single hangup. ....then after loading rom set everything up and proceed to remove bloat from [system/app] AND [data/app] ....reboot....profit.
Let me add I've had my note for about 2 weeks with stock 4.3 no root nada...straight from t-mo and had about 12-15 random reboots....After update (1st took ota then said f*÷! it and rooted and slapped custom recov on him then wiped everything except external sd and flashed stock zip) Not 1 reboot ! since what...Wednesday .....wifi calling 100 %....best of luck
Click to expand...
Click to collapse
Yes, tried multiple fresh installs/re-downloads.
I Odin'd the 4.4.2 update, rooted, flashed philz recovery, then wiped and installed the de-odexed from that thread over in development. It isn't an issue with the roms, it's definitely the update itself, people over on the T-Mo forums are having the same issues. Hopefully it gets worked out.

Bacardi222 said:
I posted about this briefly on the T-Mo forums, looks like I'm not the only one who is having some issues with Kitkat. Mainly, sometimes when you leave Wifi you will lose all radio signal until a reboot. Also, on Wifi Calling, usually after 20 minutes or so you can send text messages just fine but you won't receive them until you reboot.
Just want to warn anyone who is looking to update their bootloader like I did and now can't go back to the fully functional 4.3. I'm completely reliant on Wifi calling where I am so this is a bad situation.
I've also heard there are some battery drain issues in 4.4.2 with the Note 3.
Click to expand...
Click to collapse
My wife and I have Note 3s, both still on 4.3, rooted only otherwise stock rom and we are having this problem. We've had our phones since launch and this problem only started happening a couple of weeks ago. I definitely do not think it's an OS update problem.

Russbad said:
My wife and I have Note 3s, both still on 4.3, rooted only otherwise stock rom and we are having this problem. We've had our phones since launch and this problem only started happening a couple of weeks ago. I definitely do not think it's an OS update problem.
Click to expand...
Click to collapse
Strange, I didn't notice any issue at all before the update. This is my second phone and both have been fine, so maybe something larger at hand here.

Russbad said:
My wife and I have Note 3s, both still on 4.3, rooted only otherwise stock rom and we are having this problem. We've had our phones since launch and this problem only started happening a couple of weeks ago. I definitely do not think it's an OS update problem.
Click to expand...
Click to collapse
It not an is update issue. This happened to a few. Don't know exactly what fix was.
TWEAKED 2.0 ELEMENT V3.0 NOTE 3

Try this
I had similar problem on 4.3.
Try what I did here and see if it fixes it?
I know it is a little different problem, but nothing wrong in trying different fixes
Good luck.

[Q]Please Serious tech help! cellular data radio unresponsive

Look i normally dont ask for to much help ive been around a bit know more then the average bear. I also fix hardware.
My problem is my data radio will not switch on from any attempt:
Attempted solutions:
Dialed
*#*#4636#*#*
Will not switch on from that screen
Did the obvious and switched on and off airplane mode
Replaced the entire build.prop file with a very stock build.prop after flashing stock jelly bean
Repeated steps for all stock firmware
Newest attempt wiped the entire system partition through recovery forcefully bricking the phone. I have now flashed the original stock e980 stock 10p tot file still no luck
My phone is completely unlocked fully rooted.
I've replaced the data permission files.
And I know its not the SIM card because the SIM card is in the phone I'm using right now which is an LG g2 unlocked which is for sale by the way.
And if it is a hardware problem I have not found any related video or thread to help me find an exchange where the radio is on this thing
Help me please if anybody has any idea?

Cool no help, hey moderator can u move this to thread that may get more help that would be awesome

i came looking around here because my g pros radio stopped working sometime last night while i was asleep and was about to make a thread asking for help, but seeing as how you haven't got much i doubt i would either. but ill give you a little info on mine, will it help you out at all? not sure. but i know it might make me feel a little better.
I flashed Vanir 4.4.4 last week coming from Beanstalk 4.4.4 cause beanstalk was getting buggy from all the ugly mods i subjected it to. so all was well with Vanir till i woke up this morning and had no service, no calls, no network, AND even if i connected to a wifi network it seemed that i couldn't get any data from it. I tried flashing madmacks modem cause who knows, maybe thatll help, but it diddnt. So then i flashed a different kernel and changed TCP protocols cause who ****ing knows, but it did nothing. THEN i restored my older Beanstalk 4.4.4 backup sure that it would work flawlessly but guess what, same problem. Now that im back on Beanstalk i went to the "Network Operators" option under "Mobile network settings" and selected ATT, which is my service provider, i can now make calls and texts but still no data, when i did this on Vanir it did not help. So i started messing with my "preferred network type" and realized i have data on 2G, but not 3G or LTE. Im gonna take a wild guess and say that maybe if you flash your phone back to 100% stock your radio should start working again, as much as i dont want to, i might end up doing that as well.
tl:dr
similar problem, i dont really know ****, easiest option = go back to stock, hope it works.

@Fant0m3 @alb-o
Have you guys checked if your rom shows your imei?
I have had this problem twice. My IMEI disappeared and I don't know how.
Your symptoms match.
If that's the case you could take it to a repair shop and they'll fix it in a minute or two. Or, you can check around xda.

thats a good point, when i was looking around XDA earlier i saw a few mentions of it but diddnt see anything very specific and was late for class so diddnt have time to look for too long. strangely enough mine actually started working normally again after i kept switching from 2G to 3G to LTE, which is great. but if i would've known that info earlier i could have checked if my IMEI disappeared while my radio still wasn't working, i assume it probably did.
after searching around more i found this thread that talks about it and how to prevent it:
http://forum.xda-developers.com/showthread.php?t=1857054
thanks for the help g0at1, hopefully this helps out the OP if he hasn't already fixed the problem, or anyone else that comes across this.

nope
I've flashed back stock numerous times even flashed other versions such as e988 and back again if u dint know how to do that just change your build number in your build prop file...I've tried everything I am downt to antenna cable SIM reader or cell radio.. If radio I might as well just give up cause I can't find one for sell anywhere...I'm not so pressed as I'm using the LG g2 and it's so fast stable and a bit slimmer I think I'm gonna keep it but I would like to fix it and sell it though...... My symptoms are mentioned and all tried fixes are there. Imei is read carrier is not WiFi is received but there is an X above the data bars phone is fully unlocked as well

This may help also but it does not read my imei when the SIM is not in hmm maybe I will rework the imei code and get back if that works. I will keep updated when fixed and with solution

[Q] Losing Connectivity

Hi all, from what I've read this is a documented problem, but I haven't really found a satisfactory answer for it yet.
I live in a college town with various areas of bad receptions (such as buildings). When I lose connectivity in an area of bad reception, occasionally I will not regain reception once I move back into an area where I should. I then have to toggle Airplane mode to get reception again.
I also have a history of failing to receive texts from people sometimes, and it's starting to really annoy me.
I've flashed many roms, updated firmwares from 4.4.2 to 4.4.4, including bootloader, radio, and more, and it still happens. Has anyone else experienced this problem and managed to fix it, before I move to another phone as a last resort?

jonnyboy2040 said:
Hi all, from what I've read this is a documented problem, but I haven't really found a satisfactory answer for it yet.
I live in a college town with various areas of bad receptions (such as buildings). When I lose connectivity in an area of bad reception, occasionally I will not regain reception once I move back into an area where I should. I then have to toggle Airplane mode to get reception again.
I also have a history of failing to receive texts from people sometimes, and it's starting to really annoy me.
I've flashed many roms, updated firmwares from 4.4.2 to 4.4.4, including bootloader, radio, and more, and it still happens. Has anyone else experienced this problem and managed to fix it, before I move to another phone as a last resort?
Click to expand...
Click to collapse
I have a similar problem as well. Radio drops out, need to restart my phone constantly. If I recycle the radio (turn airplane mode on/off), the phone locks up and reboots.
Having trouble finding ANY guidance on firmware for this issue :/

More info needs to be posted like current rom/firmware, past roms/flashes or processes used , custom or stock recovery. All this will help others help you.
Pp.

Found this post, seems to be what I was looking for: http://forum.xda-developers.com/showpost.php?p=59443804&postcount=158
For background, I'm running the latest Dirty Unicorns 5.0.2 release. Went to that from 5.0.2 GPE official. Device version is TMO M919.

What modem are you currently on?
You can flash the latest nk2 modem using Odin and try it out , if that doesn't work you can try NH7.
Pp.

[Q] Stock LP Wifi connection

So I have a rather strange problem, and have found no help in other threads, so I'll start on here. I have the white G3 on T-mo (obviously) and have been trying to upgrade it to LP. I have tried both Autoprime's stock ROM as well as the stock ROM posted today extracted from the KDZ. Both were flashed through TWRP and have the exact same problem. Any time the wifi gets shut off for any reason, whether to send an MMS or because I leave the house, when it turns back on, it will not route to the internet. I can access anything on the local network, but somehow the route to the modem and the world at large is just gone, and will not come back with anything short of a reboot. I have also noticed that after a few hours of relative stability, the wifi will just randomly stop working. One other aside that may or may not be related, people have been complaining of text messages being sent 10 to 15 times when using the wifi calling since upgrading. Honestly, I'm pretty tech savvy and have followed all the flashing instructions, but am at a complete loss here. I am sure the problem is with my phone, since the identical symptoms have occurred with 2 ROMs now, both were clean flashes. Does anyone have any insight to this issue at all?

My girl has this same issue on her G3 but hers was updated through the OTA. Its running stock ROM, rooted & stock recovery and after updating to lollipop, she's having WiFi issues and battery issues and other stuff like freezing & stuff.
Zen'd N6

So, obviously there is no idea among the community regarding what is causing these wifi issues. However, T-Mo has pulled the 20b update for unannounced reasons, but stating that they seek to provide the best software experience. There are obviously multiple issues with the update, from battery to wifi calling, etc. I'm just going to assume that the wifi issues I am experiencing are part of the issues that got the update pulled. Short version: if you are wanting to use wifi calling and keep the phone as stock as possible, stay on KK for a while.