Develop Bugs

Mobile data issue??

Hello everybody,
my galaxy nexus randomly loses mobile data. This issue is not present with wifi connection but only with mobile data.
The only solution is make a reboot and after that mobile data begins to work again.
I've tried to update radio (now i've got XL1) but the problem persist
I also flashed a new rom ARHD 2.1.3 and for now no problem but i've flashed yesterday, so I'm waiting to see if the problem is solved or not.
I read in the forum that i'm not the only one, any solution about this annoying issue?
thanks

Hi,
can confirm the same issue, overall signal seems very poor now I'm at ICL53F.
can you pls paste a link for ARHD Rom? i want to test it, but can't find it using search...
thank you
Sent from my GT-I9100 using XDA App

here is http://forum.xda-developers.com/showthread.php?t=1361348
bye

LucaZPF said:
Hello everybody,
my galaxy nexus randomly loses mobile data. This issue is not present with wifi connection but only with mobile data.
The only solution is make a reboot and after that mobile data begins to work again.
I've tried to update radio (now i've got XL1) but the problem persist
I also flashed a new rom ARHD 2.1.3 and for now no problem but i've flashed yesterday, so I'm waiting to see if the problem is solved or not.
I read in the forum that i'm not the only one, any solution about this annoying issue?
thanks
Click to expand...
Click to collapse
Do you use JuiceDefender?

Same happens here, and I exchanged my phone to see if it would stop. At least it hasn't happened as much. My advice would be to put a toggle on your homescreen for airplane mode. That always remedies it rather quickly and is a workaround until Google gets on it.
Sent from my Galaxy Nexus using Tapatalk

I second the Juicedefender guess. That app turns off my data routinely, causing a delay of up to 2-3 minutes waiting for it to re-connect. I had to get rid of it for that reason.

tclarkey said:
Do you use JuiceDefender?
Click to expand...
Click to collapse
Nope,
i'm thinkg about to send my phone at samsung assistance, but i'm not the only one, i also think that google can fix that with a future update, but for now this problem is terribly annoying

I have similar issues but mine only started showing up since I started using Tasker to turn mobile data off when phone screen is off and turn back on when phone is unlocked.
One way I can get the data to work again is by turning aeroplane mode on then waiting around 5 seconds and then switching aeroplane mode off. That works for me. Another way I usually go about it is to switch my screen off then on again and my Tasker script disables and enables mobile data.
Sent from my Galaxy Nexus using xda premium

It's a common issue, people say ARHD eliminates the problem, not sure about that since im in love w/ franco and running AOKP milestone 2. Its a software issue, and will hopefully be fixed in the future. It happens irrespective of radios. toggling wifi on and off resets it 90% of the time
Also theres about 50 posts on this so please follow the rules you had to watch when you joined the forum and search next time.

[Q] Wifi loses connectivity after period of inactivity

Hello,
I've searched around the Epic 4G Touch forums as best I could, but sadly I couldn't find anything that was exactly this problem (although I found some interesting articles about wifi sleep time but they don't seem to apply). I'm experiencing an annoying issue where I can connect Wifi just fine, but if the phone is left for a small period of time (~10 minutes), wifi appears as if it's still connected, however it cannot send/receive data. When this happens, the wifi status says it's "connected", but there is no data connection. The only way to to get the data back is to turn off wifi, wait for 3/4G connection to initialize, then turn Wifi back on to refresh it...then it's fine again until I set the phone down again.
I had this problem on stock EL29, so I rooted and flashed Phantom Blazer ROM (very cool ROM, but I'm still experiencing the same issue). After reading the threads on here about wifi sleep times (apparently they're backwards with ICS roms), I've experimented with every setting, yet I still have the same issue--Wifi is fine as long as I'm using the phone, I set it down, after about 10 minutes pick it back up, says it's still connected, but no data connection.
has anybody experienced this problem with this phone? I'm about to unroot my phone/go back to factory so I can take it in to a Sprint store, the problem is they (trying not to be offensive) don't seem to know very much about this device. I thought I'd ask the pros before I return it, get an iPhone, and have to eat my words about how cool Android is vs. iPhone in front of all my friends. I'm hoping there's a reliable ROM or app that can resolve this vs. having to just replace the device!
Thanks for your help!

I'm not the only one
I'm not the only one with this problem:
edit: I can't post links to androidforums.com or anywhere else, but this same problem is all over the interwebs and nobody has a solution.
I'm sure it's not my router as my ASUS tablet/laptops/girlfriend's iPhone experiences no connectivity problems. I'm thinking this is a hardware problem with some of these devices. I will unroot/reset to factory tonight and let you know what happens.

What channel is your router on? And what type is it A/B/G/N?

This is s known TW ICS bug, most likely kernel related. Almost everyone is having this issue and there is no fix until Samsung decides to repair it. There are quite a few posts similar to this one. If you're using XDA's search function, it's not very good. Try using Google next time and search XDA that way.
Sent from my SPH-D710 using Xparent ICS Tapatalk 2

Hey guys, thanks for the response. Just before I unrooted/reset to factory I tried one last solution--download an app called "Wifi Fixer". It has resolved a lot of these problems. It's not 100%, but after testing it for a day so far, I've only had to manually refresh the connection once or twice. It's a lot better, even liveable, and I won't be resetting to factory afterall, at least not until Samsung provides an update. So if anyone is having the same problem, try Wifi Fixer, hopefully it gives you a similar level of success...I'm not super happy about having to run another background process all the time, but it doesn't seem to affect battery, and the fix it provides is worth it to me.
Cheers!

Huh - a couple of things. Noticed this problem crept back in FF18 and didn't know why until I went back and checked the wpa_supplicant.conf that I'm using. The line ap_scan=2 was missing; after adding it back in the signal strength is back to full and stable.
I'll bump the thread but it appears the config changes here still hold after all:
http://forum.xda-developers.com/showthread.php?t=1569348
This should also avoid having the WiFi fixer there as you can specify the country in wpa_supplicant.conf manually.

Thanks for looking in to this! A couple questions from a noob like me though:
When you say the problem crept back in FF18 ... what does that mean? Is that something that exists in the "stock" version of the Epic 4G touch from Sprint?
The manual config file tweaks you're describing ... is that something I can perform myself?
Basically I'm wondering if it's "safe" to revert to stock in order to get consistent wifi signal, or if it's something I'm experiencing because of the ROM I'm using.
Thanks!

[Q] losing wifi connectivity- full bars but all gray

so, I've read around here on the XDA forum about problems with wifi connectivity where we have full bars for wifi but they are gray and you are not getting out. many describe my situation but I've not seen any real solutions...
my problem is that I can connect to my wifi router without issue but then a random amount of time later, sometimes fairly quickly and sometimes it's hours later, I will pick up the phone and see full bars but they are gray and I'm not getting out. I can try opening a terminal window and pinging the gateway/dns servers and can't even reach the gateway.
things I have tried:
- turned off MAC filtering on the wifi AP
- switched from a 5 GHZ wifi on the AP to 2.4 GHZ net on the AP and vice versa
- manually set the phone wifi preference to one or the other (5 or 2.4)
- battery pull on the phone
- delete network settings for my AP and reconfigure
I have not yet tried a static IP config on the phone but I can easily try that... {edited to add} well, I tried static config and that didn't help at all...
one other tidbit of info, I have a work Blackberry with wifi and it never loses wifi connectivity so this is a problem unique to my Nexus.
I'm running Cyanogen 10.0.0-toro and no, I haven't tried a full wipe and reload yet.
thoughts or suggestions?

I'm not trying to threadjack here, but I just wanted to share my experiences.
I've been have the exact same thing happen to my phone (Nexus maguro). I've tried every JB rom I could find, several different kernels and my wifi eventually always goes grey on me. All network activities stop. I'm back on stock everything right now and it still happens.
It happens on my home wifi as well as work wifi.
I'm about to puttstock ICS on my phone and try that out for a couple days.
Anyway, good luck with your problems, i'm going to follow this thread in hopes you'll get a solution that may help me.
If I do figure anything out i'll post back.

jrmacarthur said:
I'm not trying to threadjack here, but I just wanted to share my experiences.
I've been have the exact same thing happen to my phone (Nexus maguro). I've tried every JB rom I could find, several different kernels and my wifi eventually always goes grey on me. All network activities stop. I'm back on stock everything right now and it still happens.
It happens on my home wifi as well as work wifi.
I'm about to puttstock ICS on my phone and try that out for a couple days.
Anyway, good luck with your problems, i'm going to follow this thread in hopes you'll get a solution that may help me.
If I do figure anything out i'll post back.
Click to expand...
Click to collapse
seems that this is a topic that has been posted on a bit over time with no real single culprit or fix. I'll post back if I figure anything out... I know in the Cyanogen thread, I saw info that stated that the MAC address of the phone was changing and I'm going to try and determine if that is happening to mine.

I have the same issue. Sometimes even when i pick up the phone, if i look fast enough i see that the Wi-Fi bars weren't even there! Thats only 1 out of 5 times though. The other time its usually just grey bars. Sometimes it actually will click back and they'll flash to blue and grey 2-3 times and then go solid blue. Then sometimes like you, they'll stay grey. I've tried everything too...reverting to stock, Different kernels, ROMs, routers, static IP, 2.4 or 5ghz, full auto mode. The only fix that makes it a little more reliable, is using Wi-Fi PM Fast. But even that, is not reliable. I'd say its about 50% reliable then, for a huge sacrfice in battery life. For me i've noticed this started to happen with 4.2. Before that i never had a problem. All other devices though no problem. My Nexus 7 is just fine. But the galaxy nexus, no matter what router or where i am, the Wi-Fi is totally unreliable. For me, it happens within 2 minutes that it will disconnect most times. Then 1 in 10 times it'll be fine for 10 hours.
In all honesty, i've given up. Just come to deal with it. Use mobile networks when i'm not needing to download. I can download files and stream music just fine too. If there is traffic going through, it never disconnects. But when its just sitting there without traffic, it disconnects, or, loses connection to google servers i should say.

well that's not good to hear...

I installed stock 4.0.4 a couple days ago and have not had my wifi go grey on me yet.
Sent from my Galaxy Nexus using Tapatalk 2

jrmacarthur said:
I installed stock 4.0.4 a couple days ago and have not had my wifi go grey on me yet.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
yeah, I love Cyanogen so not willing to go back to stock... waiting for them to finish 10.1 and I guess I'll see how it behaves then.

Hi all,
Just to say that I have the same problem. I have been upgraded from ICS to 4.2 and nothing had happened but I had to downgrade to 4.1.1 (AOKP Build 4) due to other issues and after that I started notice the WiFi problem.
At first I thought it was when the screen went off, but I has happened with screen on too. I have to turn WiFi off and the back on to connect properly again, very annoying.
As I said I started noticing this after I downgraded, but then again, I had used AOKP 4.1.1 before without this issue. I think that it is time to change my phone :/

tgeery said:
so, I've read around here on the XDA forum about problems with wifi connectivity where we have full bars for wifi but they are gray and you are not getting out. many describe my situation but I've not seen any real solutions...
my problem is that I can connect to my wifi router without issue but then a random amount of time later, sometimes fairly quickly and sometimes it's hours later, I will pick up the phone and see full bars but they are gray and I'm not getting out. I can try opening a terminal window and pinging the gateway/dns servers and can't even reach the gateway.
things I have tried:
- turned off MAC filtering on the wifi AP
- switched from a 5 GHZ wifi on the AP to 2.4 GHZ net on the AP and vice versa
- manually set the phone wifi preference to one or the other (5 or 2.4)
- battery pull on the phone
- delete network settings for my AP and reconfigure
I have not yet tried a static IP config on the phone but I can easily try that... {edited to add} well, I tried static config and that didn't help at all...
one other tidbit of info, I have a work Blackberry with wifi and it never loses wifi connectivity so this is a problem unique to my Nexus.
I'm running Cyanogen 10.0.0-toro and no, I haven't tried a full wipe and reload yet.
thoughts or suggestions?
Click to expand...
Click to collapse
I'm on Muzzy 4.2.2 and I'm currently having the same problem. It's not a new problem since I remember having it months ago (disabled my phone's WiFi because I kept missing emails and other notifications - grew tired of dealing with it). I thought it was my router, so I swapped it with a newer one recently, but it carried forward (old router was TRENDnet Draft N and the new one is ASUS RT-N66U).
I would like to know how to properly troubleshoot this problem.

I'm glad I didnt have to create a thread for this. I have been facing this problem quite a lot. I can confirm that WiFi works absolutely fine until 4.1.2, whether it is stock or CM10 (I havent tried the other ROMs yet). I have faced this problem only from 4.2. It still exists on 4.2.2. Happens on all the ROMs I have tried till now including CM10.1 nightly as well as the stock factory image.
When the phone is sleeping, it seems to lose WiFi connectivity and when woken up, the WiFi bars is grey though it is full. If I am very lucky, it will turn blue automatically. Most of the times, I have to switch WiFi off and back on for it to connect properly.
Anyone knows the root cause for this? In case this has been discussed in any other thread?

subhramani said:
I'm glad I didnt have to create a thread for this. I have been facing this problem quite a lot. I can confirm that WiFi works absolutely fine until 4.1.2, whether it is stock or CM10 (I havent tried the other ROMs yet). I have faced this problem only from 4.2. It still exists on 4.2.2. Happens on all the ROMs I have tried till now including CM10.1 nightly as well as the stock factory image.
When the phone is sleeping, it seems to lose WiFi connectivity and when woken up, the WiFi bars is grey though it is full. If I am very lucky, it will turn blue automatically. Most of the times, I have to switch WiFi off and back on for it to connect properly.
Anyone knows the root cause for this? In case this has been discussed in any other thread?
Click to expand...
Click to collapse
have you posted this information over in any of the threads where the developers are working such as Cyanogen in an effort to bring this issue to the forefront for more visibility?

I have had those wifi problems with every android version and rom I had on my GNex as far as I can remember.
Sometimes it will be able to reconnect but sometimes I have to disable and re-enable wifi to get it back.
I too thought that it might have been my crappy router as I have had multiple problems with it over the years (some Linksys router).
This is really annoying because it won't receive any e-mails until I randomly decide to have a look at my phone. :/

Fabur87 said:
I have had those wifi problems with every android version and rom I had on my GNex as far as I can remember.
Sometimes it will be able to reconnect but sometimes I have to disable and re-enable wifi to get it back.
I too thought that it might have been my crappy router as I have had multiple problems with it over the years (some Linksys router).
This is really annoying because it won't receive any e-mails until I randomly decide to have a look at my phone. :/
Click to expand...
Click to collapse
trust me, I understand your frustration... some days, I can go almost all day without loosing wifi data throughput and other days it won't last 10 minutes without going to gray bars.
unfortunately, no one is sharing any fixes which tells me that no one has a good handle on the problem.

Same issue for me on stock Android 4.2.2. Leave WiFi on overnight and when I wake up its connected to WiFi but gray bars...
Sent from my Galaxy Nexus using xda premium

The update to 4.2.2 drivers have fixed all WiFi issues for me. For the first time since 4.1 I can now use WiFi optimization now. And WiFi is fully reliable.

tgeery said:
so, I've read around here on the XDA forum about problems with wifi connectivity where we have full bars for wifi but they are gray and you are not getting out. many describe my situation but I've not seen any real solutions...
my problem is that I can connect to my wifi router without issue but then a random amount of time later, sometimes fairly quickly and sometimes it's hours later, I will pick up the phone and see full bars but they are gray and I'm not getting out. I can try opening a terminal window and pinging the gateway/dns servers and can't even reach the gateway.
things I have tried:
- turned off MAC filtering on the wifi AP
- switched from a 5 GHZ wifi on the AP to 2.4 GHZ net on the AP and vice versa
- manually set the phone wifi preference to one or the other (5 or 2.4)
- battery pull on the phone
- delete network settings for my AP and reconfigure
I have not yet tried a static IP config on the phone but I can easily try that... {edited to add} well, I tried static config and that didn't help at all...
one other tidbit of info, I have a work Blackberry with wifi and it never loses wifi connectivity so this is a problem unique to my Nexus.
I'm running Cyanogen 10.0.0-toro and no, I haven't tried a full wipe and reload yet.
thoughts or suggestions?
Click to expand...
Click to collapse
same thing happened to me on toroplus sourcery 5.1, after trying everything i could think of and talking to one of the devs, i finally did a fresh download of rom and gapps. wiped cache,wiped dalvik, factory reset, wipe system, deleted android folder off of storage then installed the fresh download of rom and gapps and its been working great for me since. hope this helps.

M3drvr said:
The update to 4.2.2 drivers have fixed all WiFi issues for me. For the first time since 4.1 I can now use WiFi optimization now. And WiFi is fully reliable.
Click to expand...
Click to collapse
Can you elaborate on this? I've flashed 5 different modems and still get this problem... it happens to my cell service bars, as well. Would love to know what the cause is.

aqcon said:
Can you elaborate on this? I've flashed 5 different modems and still get this problem... it happens to my cell service bars, as well. Would love to know what the cause is.
Click to expand...
Click to collapse
i just know ever since moving to a 4.2.2 kernel that has the 4.2.2 drivers my wifi has been stable. I know there was a post in the anarkia thread with the ak kernel that had the drivers. but i believe most any 4.2.2 kernel would have them implemented. i do have the newest bootloader and radio too. but i know as soon add i got the 4.2.2 drivers all issues were resolved wifi wise. of course i think if you have a 4.2.2 kennel you'll have them.

M3drvr said:
The update to 4.2.2 drivers have fixed all WiFi issues for me. For the first time since 4.1 I can now use WiFi optimization now. And WiFi is fully reliable.
Click to expand...
Click to collapse
I'm looking forward to that update - I've been watching the Cyanogen threads for when I think the 10.1 has matured enough to become my daily driver... good to know you've had positive results!

Temporary solution
me facing same issues , Solution would be to use an app called wifi fixer by zanish-g1 from the play store ...
it worked for me !! :good:

[Q] Another wifi bug thread, I've tried everything possible.

Hi!
I know there are plenty of threads about the wifi on this phone, I've read every one of them, posted in many places and have had no good outcome.
Here is my (lengthy) story.
Had annoying wifi bugs on stock 4.1.2, seemingly general lack of interest from the phone in connecting to wifi, but would generally connect after a reboot of both modem+phone+ disabling PSM (even then, not always )
6 months on stock go by, thought flashing a custom rom would fix everything and all would be well again, so I flashed PA.
An even more annoying bug showed up,
Turn wifi on > doesn't automatically connect, so I manually go to the wifi settings page and try connecting.
Before trying to connect - Full signal.
While trying to connect - Goes down to one bar while connecting > fails > then goes back to full signal.
Does occasionally connect, but it's rare. Rebooting both phone and the modem does nothing at all, seems to have a mood of it's own.
It's not just my wifi, but wifi at college too, other devices connect to the same access point just fine.
What would fix this? Will pretty much try most things now,I tried flashing NEAK too.
I don't have a data plan either, so my phone is basically useless without wifi, I've resigned to using my laptop all the time.
Thank you for reading this so far, I'd be thankful for ANY advice.
TL;DR :- Annoying wfi bug, tried every 'solution' I've heard of, nothing worked, never buying a Samsung again :crying:
(Attached images of the phenomenon)
UPDATE:- Just like stock, it will only connect if I am a foot away from the router, irrespective of how much signal I have. Even if I have a full signal elsewhere, it won't connect

dude u r running AOSP :silly::silly:
try TW Rom and see if the problem exists

yahyoh said:
dude u r running AOSP :silly::silly: try TW Rom and see if the problem exists
Click to expand...
Click to collapse
We meet again!
Like mentioned in the post, the only reason I flashed an aosp based ROM was in the desperate hope it'd rid the phone of its WiFi problem.
Thought a custom ROM would do what Samsung refuses to do.
Hope someone has a valid solution for this.
Sent from my Galaxy Note II using Tapatalk 2

Anyone?
I forgot I already had the range issue for quite a while, even on stock.
I had tried everything, including static IP, wps, and whatever else was stated to work.
Does anyone know of a working solution to this? Is this a hardware/software issue?
Sent from my Galaxy Note II using Tapatalk 2

[Q] WCDMA Mobile data issue.

Hey everbody. this is my first post on here. and I have a really annoying issue.
OK, i bought an unbranded Galaxy Note II N7100 4.1.2 jelly bean couple of months ago and that issue seemed to be there since the beginning.
It's that when I'm connected to internet through mobile data on WCDMA, all of a sudden the "received" signal (orange arrow) won't flash any more while green arrow flashes every two seconds and i have no internet access no matter what i do, the only thing that can temporarily fix this is that i restart my phone and then the internet is perfect again for a not certain interval of time and then the issue happens again, it won't come back until i restart the phone again.
Sometimes it could stay for 12 hours before it happens and sometimes i could keep restarting my phone every five minutes, it's really annoying.
I've tried all the known tricks like hard reset, deleting all apps, i disabled so many services or apps that may cause this problem, I disabled all syncing apps, i deleted, re installed APNs, i changed my SIM card and finally i subscribed for another network provider and it still happens
I'm really at a loss, I don't know what causes this problem.
Is it a hardware issue? but if it was a hardware issue, it wouldn't work at all even after restart, right? is it some bug in the built-in 4.1.2 jellybean?
And i also may say that i receive calls normally, the WIFI works perfectly and the GSM mobile data works all the time no problems, it only happens on the WCDMA ONLY or the AUTOMODE.
The H , H+ or 3G sign is up there but the orange arrow all of a sudden won't flash and no internet access at all untill i restart the phone.and this issue may start to happen even if the mobile data is off all day and when i turn it on BOOM the issue seems to be there even before turning it on.
I hope you guys can help me with this...thanks

dukemtareq said:
Hey everbody. this is my first post on here. and I have a really annoying issue.
OK, i bought an unbranded Galaxy Note II N7100 4.1.2 jelly bean couple of months ago and that issue seemed to be there since the beginning.
It's that when I'm connected to internet through mobile data on WCDMA, all of a sudden the "received" signal (orange arrow) won't flash any more while green arrow flashes every two seconds and i have no internet access no matter what i do, the only thing that can temporarily fix this is that i restart my phone and then the internet is perfect again for a not certain interval of time and then the issue happens again, it won't come back until i restart the phone again.
Sometimes it could stay for 12 hours before it happens and sometimes i could keep restarting my phone every five minutes, it's really annoying.
I've tried all the known tricks like hard reset, deleting all apps, i disabled so many services or apps that may cause this problem, I disabled all syncing apps, i deleted, re installed APNs, i changed my SIM card and finally i subscribed for another network provider and it still happens
I'm really at a loss, I don't know what causes this problem.
Is it a hardware issue? but if it was a hardware issue, it wouldn't work at all even after restart, right? is it some bug in the built-in 4.1.2 jellybean?
And i also may say that i receive calls normally, the WIFI works perfectly and the GSM mobile data works all the time no problems, it only happens on the WCDMA ONLY or the AUTOMODE.
The H , H+ or 3G sign is up there but the orange arrow all of a sudden won't flash and no internet access at all untill i restart the phone.and this issue may start to happen even if the mobile data is off all day and when i turn it on BOOM the issue seems to be there even before turning it on.
I hope you guys can help me with this...thanks
Click to expand...
Click to collapse
Tried flashing a custom rom?
Sent from my GT-N7100 using Tapatalk

Nope
OverDub said:
Tried flashing a custom rom?
Sent from my GT-N7100 using Tapatalk
Click to expand...
Click to collapse
Not really, im a noob when it comes to hacking my phone and afraid to brick it ...I still need to read and research about it..or maybe someone can help me. But till now id be happy with the 4.1.2 without this issue.

dukemtareq said:
Not really, im a noob when it comes to hacking my phone and afraid to brick it ...I still need to read and research about it..or maybe someone can help me. But till now id be happy with the 4.1.2 without this issue.
Click to expand...
Click to collapse
Flashing a custom ROM is really easy, and there is no way u can brick your phone if you do the steps correctly.
Sent from my GT-N7100 using Tapatalk