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Mobile data doesn't activate when wifi off

Having a real hard time withbswitching between wifi and 3g, anyone help? When I turn off wifi after a few hours of use, the mobile data wont come back without a reboot. I have tried cycling airplane mode, and it sometimes works and sometimes doesn't. Only way to get back is with a reboot.
Sent from my SCH-I510 using XDA App

turbodogfishhead said:
Having a real hard time withbswitching between wifi and 3g, anyone help? When I turn off wifi after a few hours of use, the mobile data wont come back without a reboot. I have tried cycling airplane mode, and it sometimes works and sometimes doesn't. Only way to get back is with a reboot.
Sent from my SCH-I510 using XDA App
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does it happen regardless of where you are? my first charge had data issues, it would only grab carrier data 1 out of maybe 10 times i rebooted and/or turned wifi off, and when it did, it took hours. replacement device still has trouble reacquiring carrier data at my home, but it's fine everywhere else. fwiw, when i researched my issue, i saw tons of anecdotal reports of people having their sim replaced by vzw and not having any further data issues.

Thanks for the reply. It seems to happen regardless of location unfortunately. I am trying to use Llama or Y5 to control wifi but its not very effective when 3g wont come back on!
Sent from my SCH-I510 using XDA App

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turbodogfishhead said:
Having a real hard time withbswitching between wifi and 3g, anyone help? When I turn off wifi after a few hours of use, the mobile data wont come back without a reboot. I have tried cycling airplane mode, and it sometimes works and sometimes doesn't. Only way to get back is with a reboot.
Sent from my SCH-I510 using XDA App
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What have you done to your phone? what is your current setup? Maybe it's time for you to flash back to factory stock to see if the issue resolved and take it from there.

You don't happen to be using juice defender or something like that? When I used it, I was having all sorts of problems getting data to come back on. Ditched JD and all is well.

I use Tasker to switch between 4g and Wifi. I haven't experienced any issues even though I switch back and forth several times a day. Could your problem be a defective phone or the radio firmware? Personally I run a rooted Stock EP4D and have no complaints.

same experience for me when using Auto Wifi on eclipse.
no problems after switching back to Tweakstock

[Q] wifi always turned off automatically and have to on it for the second time

Hi everyone,
I am currently using a rom which i like very much. However, there is a problem about the wifi.
Everytime when i turn on the wifi, it will be turned off after a few seconds, automatically. I have to turn it on again. The second time always have no problem in turning it on.
Does anyone know why? My wifi works in other roms without such problem. the problem only exists in this paticular rom. Really wants to find out why instead of switching to another. thanks.

shen6121 said:
Hi everyone,
I am currently using a rom which i like very much. However, there is a problem about the wifi.
Everytime when i turn on the wifi, it will be turned off after a few seconds, automatically. I have to turn it on again. The second time always have no problem in turning it on.
Does anyone know why? My wifi works in other roms without such problem. the problem only exists in this paticular rom. Really wants to find out why instead of switching to another. thanks.
Click to expand...
Click to collapse
Change Kernel!

On some roms I have to use a WiFi keep alive app but that is more of a sleep issue.
Sent from my LG-P500 using xda premium

myawan said:
Change Kernel!
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Click to collapse
thanks. i will try.

[Q] wifi seems to be stuck

My wifi was working fine before but yesterday I tried getting on wifi and the position seems to be stuck. It seems like it was to connect but it wont connect, i leave my phone to try and connect for many hours and it doesnt. I go to mysettings to try and turn the wifi position to off and i cant. Ive tried restarting and taking the battery out and nothing helps. I got my wifi to turn off, and after a few hours without trying to get on wifi i tried connecting and its back to what it has been doing, like in a stuck position. I got it to go off by turning the phone off completly for a few hours. Any help is well appreciated. Thank you in advance. I tried attaching a picture to better explain this, but for some reason I cant even attach a file.

What rom are you on?
God promised men that he'd put beautiful women in all corners of the world. Then he laughed and laughed and made the world round

Nohemy73 said:
My wifi was working fine before but yesterday I tried getting on wifi and the position seems to be stuck. It seems like it was to connect but it wont connect, i leave my phone to try and connect for many hours and it doesnt. I go to mysettings to try and turn the wifi position to off and i cant. Ive tried restarting and taking the battery out and nothing helps. I got my wifi to turn off, and after a few hours without trying to get on wifi i tried connecting and its back to what it has been doing, like in a stuck position. I got it to go off by turning the phone off completly for a few hours. Any help is well appreciated. Thank you in advance. I tried attaching a picture to better explain this, but for some reason I cant even attach a file.
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I've been having weird WiFi issues recently too. I'm stock. I disabled the ATT Smart WiFi but that doesn't seem to fix things. Tried one of the WiFi applications to reconnect when it detects the failure but that works only about 99% of the time.

jd1639 said:
What rom are you on?
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My phone is stock, havent done any upgrades besides that of android. Im a beginner, so i wouldnt know how to answer this. Any help is greatly appreciated.

aspexil said:
I've been having weird WiFi issues recently too. I'm stock. I disabled the ATT Smart WiFi but that doesn't seem to fix things. Tried one of the WiFi applications to reconnect when it detects the failure but that works only about 99% of the time.
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My wifi doesnt even connect now, it shows that its trying to connect but it wont. The wifi icon doesnt go to full green, it stays on a transparent green, like it wants to connect but wont.

If it was me I'd flash the stock from and get it back to the way it used to be. But if you're on stock now and haven't done any flashing its going to take a lot of learning on your part. You are going to have to learn to use odin and where to get the stock rom. Not sure if you're up for that.
Sent from my SAMSUNG-SGH-I957 using xda app-developers app

If you both are on stock call ATT. They will be more then happy to help you. With your level of knowledge that is your best course of action. They will most likely tell you to factory reset your phone. You will loose all your apps and settings. Tell them you want to back that up first. They should be able to help you from there.

hechoen said:
If you both are on stock call ATT. They will be more then happy to help you. With your level of knowledge that is your best course of action. They will most likely tell you to factory reset your phone. You will loose all your apps and settings. Tell them you want to back that up first. They should be able to help you from there.
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Guess this is what i will have to do, i just dont no if something is wrong with my phone. Thank you for your help

Hey guys,
I've been using this phone (skyrocket ROGERS version) and have had this problem ever since I "upgraded" to ICS; and I've had so many problems with this phone! I've just learned to accept that my WiFi will never work consistently enough for me to use it so I just always use my data plan (luckily I've got a lot of data).
THINGS I HAVE TRIED
Cm 10 stable
Cm 10 nightly
Cm 9 stable
Miui
Flashing stock ICS
Flashing stock Jb
Things I haven't tried
Flashing stock gingerbread (because this was the only time my WiFi worked consistently, but why go back to gingerbread)
If anybody has ANY insight on this it would be very helpful
I guess I should also mention that I've flashed everyone of these ROMs that I listed at least 3-5 times just to ensure it wasn't just a bad flash.

[Q] Connection Optimizer randomly crashing. Anyone else?

So today, the Sprint Connection Optimizer (which I dont use) has randomly started to crash, especially when I turn on my phone. I switched to ART runtime yesterday but saw no problems all day, just started this morning (I suppose it could be due to ART). Anyone else having this issue? Perhaps I turned off something I shouldnt have in the application manager but I really havent touched the phone this morning.

Same here. I'm still on Dalvik and it didn't happen until I actually connected and saved a WiFi AP. Anyone else having this problem since CF-Root + Xposed?
Sent from my SM-G900P using xda app-developers app

Im unrooted, completely factory I should add.

God this is annoying.

Anyone?

ChaddyPaddy said:
Anyone?
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For me, it seems to happen when it grabs a new connection. If I join a new wifi network, itll crash a few times. If I jump back to LTE, same. Back on my home wifi, crashes. Get a phone call where it goes back to LTE then back to wifi, crashes.
Pissing me off b/c I have it disabled but I cant freeze the damn app.

crazymook said:
For me, it seems to happen when it grabs a new connection. If I join a new wifi network, itll crash a few times. If I jump back to LTE, same. Back on my home wifi, crashes. Get a phone call where it goes back to LTE then back to wifi, crashes.
Pissing me off b/c I have it disabled but I cant freeze the damn app.
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Same here. I'll try going back to stock and seeing if it happens.

ChaddyPaddy said:
Same here. I'll try going back to stock and seeing if it happens.
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I am sure its art , I had the same issue .I went back to davlik and the issue disappeared.
Sent from my SM-G900P using XDA Premium HD app

I dont want to leave ART, haha.

crazymook said:
I dont want to leave ART, haha.
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It is ART. I had the same problem. I switched back and turned the all the animations to off and it seems way faster than with ART on. No more connection failures.

Same. I switched back today. No more errors.

Mobile Data Connection Dropping

I have installed ViperOne and Clean Rom and I have the same problem with both. After a while of inactivity my data will just quit working. The icon will still be there but the phone won't connect at all. I have to place it into airplane mode to fix this. And just fyi sleep mode is off and power saver is off. It's just like my phone forgets how to connect after a little while. I had ZERO problems when I was stock. And now this.....please help me!
Sent from my HTC6525LVW using Tapatalk

Oh and I have also done factory resets between each Rom install so everything was clean when it was flashed.
Sent from my HTC6525LVW using Tapatalk

tm1618 said:
Oh and I have also done factory resets between each Rom install so everything was clean when it was flashed.
Sent from my HTC6525LVW using Tapatalk
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Did you figure this out? i'm having the same damn issue.

bnsrowe said:
Did you figure this out? i'm having the same damn issue.
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Nope. I've returned completely to stock and am going to get a new SIM card tomorrow. If that doesn't work I'm going to get a warranty replacement.

bnsrowe said:
Did you figure this out? i'm having the same damn issue.
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Read santod's post here
http://forum.xda-developers.com/showthread.php?p=55130095
then respond in this thread. scrosler doesn't want us to discuss this issue in his rom thread. This is the perfect place to continue.
I can't wait to try it because I have the same issue on my travels but will have to wait until I get home and to my PC. Would love to read more success stories...
In essence santod says: flash the stock recovery, do a factory reset from hboot to restore the VZW radios, then restore your setup. Should work with most sense roms, but so far the people solving this issue all flashed a RUU.
Anybody have a link handy for the stock recovery?

i've ruu'd back to "stock" and am trying this now.

berndblb said:
Read santod's post here
http://forum.xda-developers.com/showthread.php?p=55130095
then respond in this thread. scrosler doesn't want us to discuss this issue in his rom thread. This is the perfect place to continue.
I can't wait to try it because I have the same issue on my travels but will have to wait until I get home and to my PC. Would love to read more success stories...
In essence santod says: flash the stock recovery, do a factory reset from hboot to restore the VZW radios, then restore your setup. Should work with most sense roms, but so far the people solving this issue all flashed a RUU.
Anybody have a link handy for the stock recovery?
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Click to collapse
Stock Recovery: Link :good:
You can find that and my firmware links in this thread.

Did the stock recovery so far so good but I won't know for sure until I get out and about today. It seems I didn't have the issue until it dropped from 4g to 3g back to 4g and have a decent 4g signal at home.

For now it seems as though that did the trick. I didn't loose data all day, we will see though.

Well it didn't work, I had to toggle airplane mode several times today to get data to work again.

bnsrowe said:
Well it didn't work, I had to toggle airplane mode several times today to get data to work again.
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Are you going to RUU?
That's what I plan to do tomorrow. It's getting to be extremely annoying. Not even toggling airplane mode or mobile data on/off does anything. I have to reboot every time.

berndblb said:
Are you going to RUU?
That's what I plan to do tomorrow. It's getting to be extremely annoying. Not even toggling airplane mode or mobile data on/off does anything. I have to reboot every time.
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RUU'd, stock recovery, flashed radios, and new SIM. I've tried everything. It seems as though if I'm in a low signal area where I go from 4g to 3g to Wi-Fi it happens. It's like there's a handoff problem between all the radios. Will show 4 bars of 4g but under mobile data in settings says disconnected.

Mine just started doing this. I'll RUU when I get back home to Texas.

bnsrowe said:
RUU'd, stock recovery, flashed radios, and new SIM. I've tried everything. It seems as though if I'm in a low signal area where I go from 4g to 3g to Wi-Fi it happens. It's like there's a handoff problem between all the radios. Will show 4 bars of 4g but under mobile data in settings says disconnected.
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May want to try this

kc6wke said:
May want to try this
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Trying this now, we'll see what happens.

bnsrowe said:
Trying this now, we'll see what happens.
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I can confirm that it did fixed the issue, I didn't loose data all day no matter if wifi, 4g,3g, or 1x,

Same here. In the last 5 days I travelled in 3 states, large cities and very rural areas where it dropped to 3G or 1x - it never had problems to return to 4G (or getting a data connection at all).
This fix proves what's so great about these forums! I probably would have ditched a phone I totally love in all other aspects due to a problem that OEM customer service would not even acknowledge existed!