what I did, I saved my phone book on the Google. then uninstalled all apps and re install OS, now wifi works just perfect (no additional software). Do you have installed "astro file manager" version ASTRO-4.2.463 ?
I'm sure that no apps like this "Check out this one https://play.google.com/store/apps/d...etterwifionoff" will work cause problem is inside that version ICS. What I will do I will re install OS without any additional software. I belive that problem came from other software or updates. Wifi in...
The same problem with my Xperia U, ICS 4.0.4.(6.1.1.B.1.10) It worked really good after updating, but only for a first month. A week ago wifi in the phone stopped turn off, I re-install android, but it did not solve the issue.