[Q] Samsung Galaxy S2 stuck on 'turning WI-FI on' - Galaxy S II Q&A, Help & Troubleshooting

Hi Team,
I have a GT-19100T which had the carriers firmware (Vodafail AU) 4.1.3 (rooted) running with no problems until recently (2 wks ago), prior to the fault I have had this phone for years no glitches great phone for its age.
I had let the battery drain, upon re-energizing the phone and attempting to turn on the wireless i noticed it just reported "Turning WI-FI on" and the toggle switch was greyed out. this would last all day. switching the phone off and on would not stop the process of the phone attempting to turn wi-fi on.
I immediately went searching forums and people suggested hardware fault or perform factory wipe through CWM.
Troubleshooting I have performed so far is:
- factory wipe and cache cleanup (not resolved)
- flashed to CM 10.1.3 (not resolved) (multiple times)
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OS: 4.2.2
Baseband: 1900TDULP4
kernal version: 3.0.64-cm-g9c2e2bc
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I have found from research that the Bluetooth and wi-fi are the same module (I maybe wrong) and Bluetooth is working fine.
So this leads me to suspect a software/firmware fault.
I'm currently downloading I9100TDVLSM_I9100TVAULSF_VAU.zip from (sam mobile) the latest release for this phone from the carrier to see if firmware will resolve the problem.
In the mean time any suggestion, advice, help or solutions would be greatly appreciated.
Maybe if someone knows of a file i can flash specifically for wi-fi module that I could try.
Thanks in advance

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monolithcog said:
Hi Team,
I have a GT-19100T which had the carriers firmware (Vodafail AU) 4.1.3 (rooted) running with no problems until recently (2 wks ago), prior to the fault I have had this phone for years no glitches great phone for its age.
I had let the battery drain, upon re-energizing the phone and attempting to turn on the wireless i noticed it just reported "Turning WI-FI on" and the toggle switch was greyed out. this would last all day. switching the phone off and on would not stop the process of the phone attempting to turn wi-fi on.
I immediately went searching forums and people suggested hardware fault or perform factory wipe through CWM.
Troubleshooting I have performed so far is:
- factory wipe and cache cleanup (not resolved)
- flashed to CM 10.1.3 (not resolved) (multiple times)
++++
OS: 4.2.2
Baseband: 1900TDULP4
kernal version: 3.0.64-cm-g9c2e2bc
++++
I have found from research that the Bluetooth and wi-fi are the same module (I maybe wrong) and Bluetooth is working fine.
So this leads me to suspect a software/firmware fault.
I'm currently downloading I9100TDVLSM_I9100TVAULSF_VAU.zip from (sam mobile) the latest release for this phone from the carrier to see if firmware will resolve the problem.
In the mean time any suggestion, advice, help or solutions would be greatly appreciated.
Maybe if someone knows of a file i can flash specifically for wi-fi module that I could try.
Thanks in advance
Click to expand...
Click to collapse
I have same problem few weeks ago when my galaxy on Stock Rom 4.1.2.
Later, I try to reflash again through Odin, then install CWM and I flash CM 10.2 4.3 through CWM and it solved.
I think you should try to flash Newer Rom version, example CM10.2 or SlimKat.
Good luck

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huytrandinh said:
I have same problem few weeks ago when my galaxy on Stock Rom 4.1.2.
Later, I try to reflash again through Odin, then install CWM and I flash CM 10.2 4.3 through CWM and it solved.
I think you should try to flash Newer Rom version, example CM10.2 or SlimKat.
Good luck
Click to expand...
Click to collapse
Thanks mate for your reply,
I installed cm 11, this did not resolve it.
need the file for the radio/modem, i'm hoping this will fix it but not sure exactly what I am looking for.
**Update***
Just finished installing I9100TDVLSM_I9100TVAULSF_VAU (latest release from Sam Mobile) 4.1.2
Still wi-fi not working.
will try and install cm 10.2 on your recommendation huytrandinh

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Okay latest nightly of CM is installed cm-10.2-20131216-NIGHTLY-i9100.
Still has not resolved the wi-fi issue.
anyone have a potential solution?
there is this post for S4, but obviously only viable for S4
http://forum.xda-developers.com/showthread.php?t=2192025
There is also this video tutorial which is for S4
http://www.youtube.com/watch?v=YL8H70Es4wg

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Try to flash a modem using odin,
Sent from my GT-I9100 using xda app-developers app

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Modem won't solve the issue as WiFi/BT drivers are in the kernel on the S2. OP was on the right track, but for whatever reason a clean install of stock didn't fix the problem.
Maybe try the 3 part firmware in Hopper8's Odin Troubleshooting thread, then a clean install of the Voda stock rom after that ?
There's 'WiFi fixes' (which are actually the LTE modem) for the I9505 as it actually has two separate modems, and the LTE modem also controls WiFi (which isn't the case with the S2 as per my comment above).

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jedzkiiii said:
Try to flash a modem using odin,
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Have been trying that, still no success.
have spent all day trying to find a solution
I tried the modems from here:
##hxxtp://###.veyka.co.uk/sgs2/radios/## (unable to post links ffs)
and few other random links from the forums

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MistahBungle said:
Modem won't solve the issue as WiFi/BT drivers are in the kernel on the S2. OP was on the right track, but for whatever reason a clean install of stock didn't fix the problem.
Maybe try the 3 part firmware in Hopper8's Odin Troubleshooting thread, then a clean install of the Voda stock rom after that ?
There's 'WiFi fixes' (which are actually the LTE modem) for the I9505 as it actually has two separate modems, and the LTE modem also controls WiFi (which isn't the case with the S2 as per my comment above).
Click to expand...
Click to collapse
Thanks Mistahbungle,
I checked out that thread http://forum.xda-developers.com/showthread.php?t=2345831
Nothing i could really use.
But I did try a few other kernels:
Siyah-s2-v5.0.1
Unfortunately as soon as flashing with other kernels the screen would go black after the initial boot logo.
Only way to resolve it not booting into the OS was to roll back to:
1. GT-I9100_JB_ClockworkMod-Recovery_6.0.2.9 (flashed with odin)
2. flash CWM-SuperSU-v0.97 with CWMRecovery
3. install cm-10.2-20131216-NIGHTLY-i9100
4. then your general cleaup through cwmrecovery
I'm not sure if I'm doing something wrong when trying to apply another kernel.
anyone able to offer assistance please with right kernel?
cheers
**Update**
Just found a post in that thread - http://forum.xda-developers.com/showthread.php?t=2345831&page=6
Will try the 3 part rom XXLSJ for GT-I9100.
Fingers crossed

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Yeah, that's what I suggested in my PP. Sorry, seems the 3 part was on HotFile & Hopper didn't have his own copy up somewhere.
The rationale was - there's possibly something from a previous installation causing your issues, and flashing the 3 part would wipe your phone. I realise you've done this manually, but at this stage you're fast running out of ideas before you declare it a possible hardware issue, and it was worth a shot.
So...What I'd try is - while you have a rooted phone, go into CWRecovery and format everything/ (not EFS though obviously, or your external card if you have one), then try re-flashing whatever stock firmware you have with Odin in download mode.
Edit - Also, maybe do a Google search for that 3 part firmware (details are still on Samfirmware, just that the files are gone), you never know, you might find it somewhere.

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MistahBungle said:
Yeah, that's what I suggested in my PP. Sorry, seems the 3 part was on HotFile & Hopper didn't have his own copy up somewhere.
The rationale was - there's possibly something from a previous installation causing your issues, and flashing the 3 part would wipe your phone. I realise you've done this manually, but at this stage you're fast running out of ideas before you declare it a possible hardware issue, and it was worth a shot.
So...What I'd try is - while you have a rooted phone, go into CWRecovery and format everything/ (not EFS though obviously, or your external card if you have one), then try re-flashing whatever stock firmware you have with Odin in download mode.
Edit - Also, maybe do a Google search for that 3 part firmware (details are still on Samfirmware, just that the files are gone), you never know, you might find it somewhere.
Click to expand...
Click to collapse
Okay just finished testing the rom by installing it via odin (3 part)
still has not yielded any favorable results .
Little disapointed as this was a great backup phone and served for the past 12 months as a mp3 player
Guess as they say; It is all planned obsolescent which is fracked ...
Thanks for the suggestion/help anyway.

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I know this is an old thread but my gs2 had this problem and I was able to fix it. Using es file explorer made my way to /data/misc/wifi pulled up the properties to wpa_supplicant.conf and changed group to wifi...then wifi finished initializing...hope this helps somebody
Sent from my SM-T310 using XDA Premium 4 mobile app

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for consideration.
I have this phone. the GT-i9100. Had this issue also. I took it apart. The little onboard battery had blown and corrosion got all over all it.
and guess where WiFi hard is. Right Next door. I cleaned it up real good. Put it back together and WiFi came back to life.
So give it some thought guys.