WiFi not getting ON and Off I have a Samsung S Duos GT-S7562. Its warranty is over. I am seeing that its WiFi is not working now. Whenever I try to switch it ON, it toggles between ON and OFF. I have tried a factory reset and that doesn't helped me. Request your suggestions.
My current version is Android 4.0.4
I cannot comment because I do not have 50 reputation hence I am updating this as an answer.

Me too had this problem and I tried all possible troubleshooting steps with the help of almost every forum I knew to no avail. This is what I tried:


Installed 4-5 wifi fixer apps from play store - Did not help.
If you have a cwm or twrp recovery installed, try doing factory reset from recovery - I tried it on my mmx canvas hd a116 with 4.1.2 JB but did not work
I installed a custom rom. The device was working fine but no improvement in WiFi
Went to mmx service station, they asked INR 60 for checking problem and said it was a motherboard fault and would cost more than INR 4500


Finally I went to a local cell phone repair guy and got the WiFi &amp; bluetooth IC replaced for INR 400. Now everything is working fine.