Develop Bugs

data hanging

Hi,
Does anyone have this problem on their phone? Every now and then, when I am doing a data related function, data hangs as though it is not connected even though I am in a perfect 4g coverage area and the 4g sysmbol is still on. I know its hanging because the arrow to the right of the 4g symbol stays lit green. It either starts working 5 minutes later on its own or I turn wifi on and off. I have the newest sim card installed.
Any thoughts?
Thanks

probably a software related issue
the only time i experience that is when i lose connectivity with the network, as in the signal bars or 3G/4G arrows are all greyed

Yea dude i noticed even tho i have wifi set to never it always shuts off or i should say loses connection i hate it because i have to pull down status bar hit it off then on wifi is definitely effed on stock too. Anyone else experiencing this? I know its a problem cuz my g2x i could leave it alobe for an hour in hibernate come back and wifi still good to go anyone have any ideas? Or is it a s2 problem witg wifi cutting off. Like i said the icon will still be there but i wont have connection and 50% of the time i have wifi icon and 4g

Same issue here, in two different phones I've had. Not sure what the issue is. In fact, opening this page, my data was hanging for a minute, irony.
Sent from my SGH-T989 using XDA App

sarni84 said:
Yea dude i noticed even tho i have wifi set to never it always shuts off or i should say loses connection i hate it because i have to pull down status bar hit it off then on wifi is definitely effed on stock too. Anyone else experiencing this? I know its a problem cuz my g2x i could leave it alobe for an hour in hibernate come back and wifi still good to go anyone have any ideas? Or is it a s2 problem witg wifi cutting off. Like i said the icon will still be there but i wont have connection and 50% of the time i have wifi icon and 4g
Click to expand...
Click to collapse
for this issue you can configure how WiFi behaves, but the settings are only accessible via spareparts or custom ROMs
I set my wifi to never sleep while on charger
Sent from my SGH-T989 using xda premium

I'm on att galaxy s 2 and an having the same issue on CM7. It happens when I have gps turn on or I start market. Weird and really annoying
Sent from my SGH-I777 using XDA App

Its fro my account app
Sent from my SGH-T989 using XDA App

AllGamer said:
for this issue you can configure how WiFi behaves, but the settings are only accessible via spareparts or custom ROMs
I set my wifi to never sleep while on charger
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
But this happens to me when my wifi is off. Only on the cellar data connection.

I had this issue after giving juice defender superuser permissions. It seemed that it would not turn data back on when I had the screen on. I'm not sure if this applies to you, but I no longer gave juice defender su and everything was fine. a lot of those functions in that app do not seem to play nicely with this phone yet anyway.
Sent from my SGH-T989 using Tapatalk

ive started to notice that too. thought it was the area where i live.
Sent from my SGH-T989 using Tapatalk

Yep, for several weeks now. I thought it was my ROM.
Sent from my GT-I9000 using xda premium

It happens to me several times a day. Usually right after a voice call. I just put on flight mode for a second, switch it off and data is back. I have no idea what's causing this. Always on 4g, wifi is working perfectly.
Sent from my SGH-T989 using XDA App

+1 to everything already mentioned.
I was in Vegas this weekend and had HORRIBLY slow/no data at all. Like has been mentioned, the green arrow with just stay lit. thought i was the rom, i nandroided back to stock, same issue. Hope this is fixed soon it is hella annoying.

This fixed it for me
I have had this same issue for a while, here's how to fix it. Go to Titanium backup, I found out that there're two versions of "My account" on the list, so I frozed the old one, then go to task manager "kill all", the 4G icon will disappear. Open up "My account" again, the 4G reappears but as soon as I close the app, the 4G icon would disappear.
Hope it helps someone

I too have similar problems where my data hangs or doesnt want to connect. Then a few minutes later, it will decide to start working. This happens even in full signal regions. Stock rom and/or BeastMod rom...
Not sure why it happens :S

For those having problems and have tmobile my account on phone freeze it or uninstall it i guarantee it fixes your data problems trust me. I to had problems just like you guys and i was told to uninstall my account i was like what? What the hell is that going to do but believe me when i say it worked! I actually unfroze it to see if the problem would come back (4g and wifi on at same time) or cutting out. And it did. So i refroze my account and bam 4g disapeared while wifi on. This has fixed all my wifi and data problem phone works flawless now! Basically i think t-mobile trying to snoop with our data. Scumbags

This is happening to me. The phone is driving me mad. It happens constantly. The "up arrow" in the 4g icon will light up, and all data will freeze. I stare at loading screens all day long. It freezes anywhere from 30 seconds to 2 minutes. Then it will fix itself, then it will happen again within 2-5 minutes. I'm furious with this phone.
Wifi works great. It's not dependent on my location, it happens no matter where I am. Doesn't matter what I do, nothing prevents it from happening. Of course, the Airplane mode toggle or resetting APNs and all that will do the trick to fix it temporarily, but it will only happen again 5 minutes later.
I'm on stock, unrooted. I am ready to throw this phone at the wall. Has anybody else managed to actually fix it or get a response from Samsung/T-Mobile?

I should have read this thread before buying this phone. This is so annoying. I tried to put the phone in flight mode. It fixed for a min and back to problem.

I'm having the same problem. I didn't have this problem until I updated to 2.3.6. Anyone else still on an earlier version?
Sent from my SGH-T989 using xda premium

Same things been happening to me lately, its awfully annoying. Makes me want to throw my phone across the room sometimes.

[Q] CM7 - have to reboot after flight for data

I have just gotten this phone a few weeks ago and so far i am having a great time. However, one of the biggest problems i have is toggling flight/airplane mode.
Whenever I turn on airplane mode and then it off, I have to reboot to get my mobile data back.
My phone is currently running CM7.
Any help would be appreciated..i have tried searching for a solution but i have found nothing.

bump....any1?

Yes this is a known bug with the alpha CM7 releases out there and I ran into it as well. After turning off flight mode you will notice that your APN's disappear and rebooting is the easiest way of getting them back and re-establishing your data connection. No other workarounds with the code at the level that it is.

The current iteration of cm7 is an outdated bug ridden ROM. It is what it is and is not going to be fixed. Use something else and just wait till the new cm that Eugene and others is working on gets released.
Sent from my SGH-T989 using xda premium

ah alright thanks again

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....

Lose Signal when screen goes off/starting call

Hey guys!
I'm having a tricky problem right now... i hope it's no hardware fault
I am losing my connection to my network provider as soon as the screen goes off.
I noticed it when starting a call a couple of hours ago. I had full bars and as soon as i put the phone against my ear i lost my connection --> all bars down and grey.
The weird thing is, i can call somebody no problem as long as i dont let the proximity sensor let the screen turn off. This is the same case with mobile internet. As long as the screen is on ---> no problems. Screen Off --> Signal lost
I am on an ICS Rom (AOKP build 38) and had no problems with this rom for about a week. Just changed the Rom and noticed the problem and reverted back to my backup which was supposed to still be running fine.
I even reflashed the newest radio... still losing signal
Please tell me, i'm overlooking something and this is no hardware fault from me flashing...
Any help would be greatly appreciated!
EDIT: Wow... problem solved. Flashed back to the rom that brought the problem (Elitemod). And now everything works again. Weird...

Hi. I have same problem. I flashed CM7 7.2 and it looses signal and mobile internet always when turn screen off. And it comes back right when screen turns on. WTF.. @_o. So that means at nobody can´t call me. ****.
Dragoth said:
Hey guys!
I'm having a tricky problem right now... i hope it's no hardware fault
I am losing my connection to my network provider as soon as the screen goes off.
I noticed it when starting a call a couple of hours ago. I had full bars and as soon as i put the phone against my ear i lost my connection --> all bars down and grey.
The weird thing is, i can call somebody no problem as long as i dont let the proximity sensor let the screen turn off. This is the same case with mobile internet. As long as the screen is on ---> no problems. Screen Off --> Signal lost
I am on an ICS Rom (AOKP build 38) and had no problems with this rom for about a week. Just changed the Rom and noticed the problem and reverted back to my backup which was supposed to still be running fine.
I even reflashed the newest radio... still losing signal
Please tell me, i'm overlooking something and this is no hardware fault from me flashing...
Any help would be greatly appreciated!
EDIT: Wow... problem solved. Flashed back to the rom that brought the problem (Elitemod). And now everything works again. Weird...
Click to expand...
Click to collapse

Hi,
Just check in power saver settings if you've opted for disconnecting data when screen goes off.
Sent from my HTC Vision using xda app-developers app

[FIX] Dropping WIFI (disconnect/reconnect issues)? Check this thread.

I know I had a problem with WIFI dropping every few minutes and disconnecting/reconnecting all the time. Causing streaming issues, internet issues and freeze issues if on lockscreen. Well, I have fixed this for myself and wanted to share.
To insure this doesn't happen, just follow these steps:
1. Dial *#0011#
2. Hit the left menu softkey to bring up the menu, and select 'Wifi'
3. Turn OFF the 'Wifi Power Saving'
4. Exit, and Reboot.
Ever since then, I haven't had issues. I am on AT&T GS3. If you are having this issue, please report back here with your model and if this fix worked.
Just trying to help. Good day all!

I'm not entirely certain this was happening, but had noticed some oddities. Not as bad as your experience, however.
But I did make the change to see how it would affect battery life. I am on the Sprint network.
----
Brought to you by my ghetto ProClip mount http://m.youtube.com/watch?v=jH3XoLqfXsY

Optimizer said:
I know I had a problem with WIFI dropping every few minutes and disconnecting/reconnecting all the time. Causing streaming issues, internet issues and freeze issues if on lockscreen. Well, I have fixed this for myself and wanted to share.
To insure this doesn't happen, just follow these steps:
1. Dial *#0011#
2. Hit the left menu softkey to bring up the menu, and select 'Wifi'
3. Turn OFF the 'Wifi Power Saving'
4. Exit, and Reboot.
Ever since then, I haven't had issues. I am on AT&T GS3. If you are having this issue, please report back here with your model and if this fix worked.
Just trying to help. Good day all!
Click to expand...
Click to collapse
Didnt notice a difference and after a reboot it turns back on.
Sent from my SPH-L710 using xda premium

I don't have issues at home but I do with the WiFi at work so I'll try it tomorrow and let you know how it works out. It disconnects and reconnects every 5 seconds and I'm not exaggerating either.
I think the WAP may be a little wonky but my HTC Desire HD had no problem with it.

Mine turned back on after reboot as well.
----
Brought to you by my ghetto ProClip mount http://m.youtube.com/watch?v=jH3XoLqfXsY

I am working through logcats as well. I reverted the setting to mimic the problem, and I am going to look at logcats.
If I can see what is exactly triggering it, I will make a flashable fix.
In the meantime, I have another S3 here that I have the power save off on and I still haven't seen a drop yet. So preliminary, I think this is a temporary fix until I can find out root problem.

Hope you find a fix

Optimizer said:
I am working through logcats as well. I reverted the setting to mimic the problem, and I am going to look at logcats.
If I can see what is exactly triggering it, I will make a flashable fix.
In the meantime, I have another S3 here that I have the power save off on and I still haven't seen a drop yet. So preliminary, I think this is a temporary fix until I can find out root problem.
Click to expand...
Click to collapse
I have a similar problem. Mine doesn't disconnect per-se, however I did notice while browsing through Flipboard that I wasn't getting any signal sometimes when trying to access a page with a lot of content. Page loading came to a stop. Backed out several times and retried until I finally gave up. This was on my home wifi. I'll try your work-around for a few days. T-Mobile version.
EDIT: This may be just a FlipBoard quirk.

I will try this when I get home. I have a problem on my Sprint SGS3 where it stays connected to wifi but the internet won't actually work (can't browse internet, use play store or youtube, etc). Wifi never sleeps, it's always on. It never disconnects from the network, it just stops receiving and sending data. So we'll see if this does anything for it.

you guys dont have an issue where the display doesnt timeout after turning off the power save?

display won't time out from turning off the wifi power save. Totally unrelated. I am trying to mimic the problem right now.
If anyone is having the issues of the reconnnecting every few seconds and can logcat it for me, PM me please. I can't seem to mimic the problem since the fix.

Optimizer said:
display won't time out from turning off the wifi power save. Totally unrelated. I am trying to mimic the problem right now.
If anyone is having the issues of the reconnnecting every few seconds and can logcat it for me, PM me please. I can't seem to mimic the problem since the fix.
Click to expand...
Click to collapse
It happens randomly and especially after the phone goes into deep sleep with wifi on

nubbert said:
I don't have issues at home but I do with the WiFi at work so I'll try it tomorrow and let you know how it works out. It disconnects and reconnects every 5 seconds and I'm not exaggerating either.
I think the WAP may be a little wonky but my HTC Desire HD had no problem with it.
Click to expand...
Click to collapse
Turning off power save does indeed fix the WiFi issue at work. As posted before, restarting the phone turns power save back on and the problem is back.
Optimizer said:
display won't time out from turning off the wifi power save. Totally unrelated. I am trying to mimic the problem right now.
If anyone is having the issues of the reconnnecting every few seconds and can logcat it for me, PM me please. I can't seem to mimic the problem since the fix.
Click to expand...
Click to collapse
PM sent.

Going through multiple logcats now.
I am seeing even with power saving on though, the problem is still there. It is still disconnecting from WIFI and going back to the data network.
I am sifting through ALOT of code, as some of these log cats are extremely long.
Give me til tonight and I should have a reason at least to why it's doing it by comparing on vs off on powersave.
I have a request, anyone WITHOUT this issue, can you send me a logcat with your WIFI turned on?

Optimizer said:
Going through multiple logcats now.
I am seeing even with power saving on though, the problem is still there. It is still disconnecting from WIFI and going back to the data network.
I am sifting through ALOT of code, as some of these log cats are extremely long.
Give me til tonight and I should have a reason at least to why it's doing it by comparing on vs off on powersave.
I have a request, anyone WITHOUT this issue, can you send me a logcat with your WIFI turned on?
Click to expand...
Click to collapse
How do i get a logcat?
Sent from my SPH-L710 using xda premium

Search the forum for logcat help. I am on the phone at work or I'd link you
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Thanks for this. I was about to return the phone because I kept losing ability to connect to any WAPs after sleep mode kicked in. Mine is a Verizon S3.

I've seen this as well. Almost always after deep sleep. Most of the time I have to cycle Wifi to get it connected again every so once in awhile it will connect again on its own. Regardless of the settings that I put in "advanced" under wifi it will do this. Even if I have it set to keep alive never, always or plugged in it doesn't matter.

I still need a logcat from someone NOT having these issues.
Right now from looking through over 10 logcats, I am seeing that it's usually happening on routers that are encrypted with WEP and WPA, unfortunately the 2 most popular forms of wireless security.
That being said, users that are on 'open' networks do not seem to be losing access.
2 things.
1. Can someone PM me a logcat of them successfully connecting to wifi and NOT having drops. I don't care how long the logcat is.
2. When you post about your problems, please tell me what carrier and what type of encryption is being used on the router (if any)
I have been comparing and in each instance, WIFI is going into sleep, turning on data, and then having a problem turning back on.
I think it's an attempt to save power, but only it is not because switching from WIFI to data back to WIFI so much is a real drainer.
Still working on maybe disabling the power save by using a init.d script, to prevent power save mode from coming back on when rebooted, because I know alot of users are saying after disabling it, it is just reapplying on reboot.
BACK TO LOGCATS FOR ME. :/

solehjeff said:
How do i get a logcat?
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1616059