Develop Bugs

WiFi not turning on?

Ok so a couple of days ago I installed a 4.0 ready radio on my galaxy s2 and then went on to install Jedi Knight 6 ROM (4.0.4 and radio is UVMC6) and after installation everything was working fine.. I was messing around for a while.. it worked today, I shut my phone off to charge it up real quick, and when I turned it back on my WiFi would not connect. Well not necessarly connect.. it just wont even turn on. When I go into settings and click WiFi, it just sits there saying, Turning WiFi on, and never changes.. I can't seem to imagine what could have happened to it, and I really dont wanna have to reinstall the ROM again because i just spent hours getting this one all set up to my liking...
Anyone got any ideas?
EDIT: BTW, I have tried many things.. Tried airplane mode to disable everything then turn it back on, obviously tried rebooting the phone, i have tried wiping cache in CWM recovery and also tried fix permissions in recovery (another topic said to try those..)
Nothing has worked so far, i'm about to try reflashing my radio, see if that works.. but I really really dont want to have to reflash my whole ROM.. So if anyone has any other ideas please help, i'll edit if the radio works..
EDIT 2: Reflashing the radio did nothing.. it's really wierd, the data, bt, gps.. all of it works fine, it's just the WiFi that's frozen turning on... cant get it to stop turning on and can't get it to actually turn on..
EDIT Final: Ok well, i guess nobody knows what might have been going on.. so I just wound up reflashing my ROM, which obviously fixed it.. i just had to lose all that time spent setting everything up... But oh well.. Kinda sucks nobody even tried to help..

Gopher love said:
Ok so a couple of days ago I installed a 4.0 ready radio on my galaxy s2 and then went on to install Jedi Knight 6 ROM (4.0.4 and radio is UVMC6) and after installation everything was working fine.. I was messing around for a while.. it worked today, I shut my phone off to charge it up real quick, and when I turned it back on my WiFi would not connect. Well not necessarly connect.. it just wont even turn on. When I go into settings and click WiFi, it just sits there saying, Turning WiFi on, and never changes.. I can't seem to imagine what could have happened to it, and I really dont wanna have to reinstall the ROM again because i just spent hours getting this one all set up to my liking...
Anyone got any ideas?
EDIT: BTW, I have tried many things.. Tried airplane mode to disable everything then turn it back on, obviously tried rebooting the phone, i have tried wiping cache in CWM recovery and also tried fix permissions in recovery (another topic said to try those..)
Nothing has worked so far, i'm about to try reflashing my radio, see if that works.. but I really really dont want to have to reflash my whole ROM.. So if anyone has any other ideas please help, i'll edit if the radio works..
EDIT 2: Reflashing the radio did nothing.. it's really wierd, the data, bt, gps.. all of it works fine, it's just the WiFi that's frozen turning on... cant get it to stop turning on and can't get it to actually turn on..
EDIT Final: Ok well, i guess nobody knows what might have been going on.. so I just wound up reflashing my ROM, which obviously fixed it.. i just had to lose all that time spent setting everything up... But oh well.. Kinda sucks nobody even tried to help..
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+1 I'm going through the same thing now

I have been having this same issue as well. It started out as stock happening sporadically. One thread suggested rooting and removing my account. Problem still occurring. Tried flashing multiple ROMs and now WiFi hasn't connected at all always stuck at turning on. I have tried clear cache, fix permissions, as well as reinstalling ROM dirty and with factory reset. I'm hoping this isn't hardware failure because I just bought this phone used but it seems to be a reoccurring problem with others as well. Any NEW suggestions not given from quick Google/xda search?

stoneduser8907 said:
I have been having this same issue as well. It started out as stock happening sporadically. One thread suggested rooting and removing my account. Problem still occurring. Tried flashing multiple ROMs and now WiFi hasn't connected at all always stuck at turning on. I have tried clear cache, fix permissions, as well as reinstalling ROM dirty and with factory reset. I'm hoping this isn't hardware failure because I just bought this phone used but it seems to be a reoccurring problem with others as well. Any NEW suggestions not given from quick Google/xda search?
Click to expand...
Click to collapse
I'd suggest to check your Wireless Access Point (modem or router) wireless settings for security, check and see if it's set to use WPA/WPA2, which is common on some modems/routers, change it to either WPA or WPA2 (preferred) not both, it's a known issue with WiFi networks and having it set to using both, I had the same problem before with my phone connecting to my WiFi.
Also if you use MAC Address Filtering on the modem/router, you should disable/clear that and let phone re-connect before enabling mac filtering again.

Almite said:
I'd suggest to check your Wireless Access Point (modem or router) wireless settings for security, check and see if it's set to use WPA/WPA2, which is common on some modems/routers, change it to either WPA or WPA2 (preferred) not both, it's a known issue with WiFi networks and having it set to using both, I had the same problem before with my phone connecting to my WiFi.
Also if you use MAC Address Filtering on the modem/router, you should disable/clear that and let phone re-connect before enabling mac filtering again.
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The problem I am having is not that it won't connect to a particular network. Wifi will not initialize on the device at all and is stuck in "Turning On..." state. I found more and more posts where people ended up having to send in to Samsung so I spoke with them and even though I purchased the phone used its thankfully still under warranty and they will be replacing it. The did not confirm whether or not it was a true known device issue but were quick to file the exchange for me.

sigh, me too!
Just started having this problem on 4.3.1
great.

In my case, I had to wipe system and data before reinstalling my ROM.
Though the only reason it was happening to me was because Beanstalk 4.4.2 didn't want to get past the splash screen when I tried to install it so I downgraded back to ICS 4.0.4 without wiping. Good luck getting this issue fixed. Also another kernel might fix thingz for you if your current one does not like your device.

I have a similar problem. After a while, WiFi gets disconnected. If I go in settings - wifi, i get the message "unfortunately, settings has stopped" and I can't get WiFi to work again until I reboot the phone. The Wifi works again for a couple of minutes then stops.
I have flashed various different ROM (CM11, PA) but keeps getting the exact same behavior.
I've rebooted in safe mode and I don't get the problem now.

Wifi issue after update

Hi all
yesterday my i9195 recieved an update to JDQ39.I9195XXUBMJ7 but since then WIFI refuses to work.
Contactting Samsung on twitter they say to backup and update by wifi, duhhh.
Trying by pc, KIES says : doesn't support software upgrade
Even KIES3 does
So now i'm lost to fix wifi issue
Luckily i run on private Phone my note 2
Thnx for helping

rayblo said:
Hi all
yesterday my i9195 recieved an update to JDQ39.I9195XXUBMJ7 but since then WIFI refuses to work.
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I am experiencing the same issue, same phone and rom i9195 JDQ39.I9195XXUBMJ7. Wifi works after reboot for about 10 minutes and then stops responding. It may stay connected for a few hours after it stops working, but the phone can't send data over it.
I have wiped data/factory reset the phone to no avail.
I read somewhere about a few people with other devices on 4.2 having troubles with AES encryption on their routers. Might be somewhere for us to start troubleshooting. The other option is to just try downgrading to the previous version.

[Q] Data connection randomly disconnects (Carbon JB ROM)

Hello,
I have an issue that my data connection (internet) keeps disconnecting randomly and I either have to switch it off and on again, or turn airplane mode on and then off, or even restart the phone to get the data connection working again.
Is this normal for this rom? is there some fix for this? For a first few weeks everything was fine, but now it is intolerable.
I had this issue on stock rom too, but only a few times, when I completly lost signal, I had to restart the phone.
Help! i don't want to flash the rom again and start from scratch again
Thank you in advance!:laugh:

No one can help? Anybody facing the same issue?
Sent from my GT-I9195 using XDA Premium 4 mobile app

Hi, I seem to have the same issue. I deleted the other unused apns and now it seems to be better, but I just did this now, so in not too sure myself yet. Any help would be appreciated.
// didn't help

SOLUTION
hey there,
i think i found the solution, you need to install a KK modem (i assume you have a KK rom)
http://forum.xda-developers.com/showthread.php?t=2545784
hope that helps
Matekofski said:
Hello,
I have an issue that my data connection (internet) keeps disconnecting randomly and I either have to switch it off and on again, or turn airplane mode on and then off, or even restart the phone to get the data connection working again.
Is this normal for this rom? is there some fix for this? For a first few weeks everything was fine, but now it is intolerable.
I had this issue on stock rom too, but only a few times, when I completly lost signal, I had to restart the phone.
Help! i don't want to flash the rom again and start from scratch again
Thank you in advance!:laugh:
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Click to collapse

Unable to start Wifi & Bluetooth

My LG G3 wifi & bluetooth stucked at turning on. Tried factory reset, flashed the ROM & use FXR wifi fix and rescue but still not working. Have not tried changing to another Kernel yet. Could it be hardware problem?

I don't think so... Maybe an app is in conflict with wifi & bt.
Inviato dal mio LG-D855 utilizzando Tapatalk

f.gritti97 said:
I don't think so... Maybe an app is in conflict with wifi & bt.
Inviato dal mio LG-D855 utilizzando Tapatalk
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But I've already factory reset & flashed the latest stock ROM. Did not install any apps except the default apps.

fongkit82 said:
But I've already factory reset & flashed the latest stock ROM. Did not install any apps except the default apps.
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I don't know how to hekp you then... That's pretty strange to me [emoji53]
Inviato dal mio LG-D855 utilizzando Tapatalk

Similar issue on my end - About a month ago, I opened a support ticket with LG. They returned as "repaired" and my phone worked for about three days before the issue returned.
Using Titanium Backup, I restored the bluetooth system software and it worked for about a day. Considering flashing my phone back to stock and starting over.
If anyone has experience on finding a permanent fix to this issue, I'd be all ears.

Try booting into safe mode and see

I'd be very interested in a fix for this too.
I've a completely stock unrooted D855 that last week seemed to over heat and shut itself down. On restarting it's eaten it's way through the battery in very short order, gotten hot and shut down again. Rince and repeat a couple of times. I've then factory reset and its continued to do the same thing.
Further investigation has shown the WiFi and Bluetooth "turning on" constantly without ever actually turning on. And I've then discovered that the MAC address (and Bluetooth equivalent) are missing.
Would appreciate any help possible

Seems like i'm not alone. Yup my phone auto restarted few days ago after turning on wifi & it keep rebooting if the wifi is turned on. Only stable after i flash the ROM but the WiFi & Bluetooth issue persists. Safe mode does not help.

Same issue started 2 weeks ago. Factory reset didn't fix and battery life being killed by constant searching for BT and wifi. Unlocked G3. Waiting for Marshmallow in the hope it fixes it.

You could also have broken firmware when i got my g3 wifi turned on and off and always dropped connections i ended up reflashing stock with flash tool and tot method and it fixxed i had a bad firmware download straight from lg

hmm so no one has a way to fix this issue?

fongkit82 said:
hmm so no one has a way to fix this issue?
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Click to collapse
Same problem here, wifi and bluetooth mac address unknown, return to stock with kdz files, 10a, 10f, 20, 21a, nothing work, .tot method also not work.
On 4.4.4 = boot loop, and for android 5 battery drain and wifi bluetooth issues.
Waiting for marshmallow

i found a post by someone else in another forum that fixed this problem. I followed some of his steps to reboot into safe mode to turn off the bluetooth & wifi but it didn't work so i turn on Airplane mode while i'm on safe mode & reboot again in safe mode & it works.
http://forums.androidcentral.com/lg-g3/595554-lg-g3-wifi-bluetooth-won-t-turn-why.html

Any fixes with Marshmallow ?

Would be good to know a fix as recently happened to me. Can now only use data for Internet and am getting through a battery in 3 and a half hours as the phone is constantly trying to connect the WiFi and BT. Tried Factory reset. Used LG Mobile Support to update software. Now finally have the lovely Marshmallow but the issue remains. Please help!

Has anyone found a solution to this problem?

Anyone found anything on it?

Same problem here. Wifi and bluetooth randomly stopped working. It works randomly sometimes..
Wifi mac address shows as 00:02:00:00:00:00

New Battery
Hey everyone, I had the same problem. After installing an OTA update, my D850 crashed. When it started up again, I had no WiFi/BT. I tried several factory resets, flashing multiple custom roms, tried unrooting and returning to stock. Was convinced it was a hardware problem. As a hail mary, I ordered a new battery off Amazon. I put the replacement battery in my phone, and WiFi and Bluetooth are now fully functional. Is it possible that everyone with this problem just has a bad battery? It's definitely worth a shot.

probably a hardware issue...
Hey guys,
if brysclar's hint about the battery (see right above) doens't help you, you might want to check out a detailed summary I've written about this issue here: http://forum.xda-developers.com/general/help/qa-wifi-stuck-mac-020000000000-g2-g3-g4-t3452133
Good luck!

Wifi unable to turn on after wake up from deepsleep.

Like i said at the title, after screen off about 5min, the phone go to deepsleep then i cant turn on the wifi again unless reboot. im in OOS 8.1 5.1.1, i have try to reinstall , clean flash again but it still happen, i dont think this problem from the rom or kernel. anyone can help me please?
its so annoying.:crying::crying::crying:

Same issue here when I have "wifi on only when plugged in"
I turned on scanning for wifi and that fixed the issue.

Xcal15 said:
Same issue here when I have "wifi on only when plugged in"
I turned on scanning for wifi and that fixed the issue.
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it switch to Nougat OOS and it wont happen again, it only happens for me at the 8.x android even i turned on scanning for wifi or not.

akiralee said:
it switch to Nougat OOS and it wont happen again, it only happens for me at the 8.x android even i turned on scanning for wifi or not.
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All very fine in my Op5t with 8.1 5.1.1

Do you have battery saving apps installed and are you running stock? I've got the same issue here. Deep sleep breaks wifi. When I turn the screen on (exiting deep sleep), I either need to wait long for it to connect, or sometimes just have to reboot to get it to connect at all. I've contacted support but I think this may take some time...

Same problem here. I reflashed 5.0.4 after a factory reset. It still happens. The ONLY thing that changed is I keep getting notified to update my os. There's a check box to automatically download over WiFi. Could this have screwed something up?
I've started having other strange problems like Chrome getting very laggy periodically, and have had to reboot more these past two weeks because of connectivity issues than I have in the entire time I've owned the phone.
My next step is to do a complete wipe off everything and start completely over, but I'm doubtful this will help.

Xcal15 said:
Same issue here when I have "wifi on only when plugged in"
I turned on scanning for wifi and that fixed the issue.
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This is the issue! If you switch the setting to "always on", there is no problem. So yeah I am having the same problem, very annoying. "wifi only on when plugged in" is broken, and then wifi settings keep crashing!

i also have this problem sometimes

rjstefani said:
Same problem here. I reflashed 5.0.4 after a factory reset. It still happens. The ONLY thing that changed is I keep getting notified to update my os. There's a check box to automatically download over WiFi. Could this have screwed something up?
I've started having other strange problems like Chrome getting very laggy periodically, and have had to reboot more these past two weeks because of connectivity issues than I have in the entire time I've owned the phone.
My next step is to do a complete wipe off everything and start completely over, but I'm doubtful this will help.
Click to expand...
Click to collapse
I upgraded to 5.1.1 after a wipe off everything (data, cache, system, sdcard, every check box available on TWRP) and it still has a problem.
Any suggestions on how to debug this?