If you are or have updated to iOS 6 today, then you might want to read this!
https://discussions.apple.com/thread/4310121?start=0&tstart=0
Some peoples WiFi doesn't work after updating.
Mine is fine after updating.
There are some posts saying how to fix the issue on pages 40 & 41 on the above link.
QuoteFIX:
Settings > Wi-Fi > (Network...) > "Blue Circle Arrow"
Scroll down to the bottom of the screen and set:
HTTP Proxy to Auto
:lol:
I'm laughing because the WiFi on my phone stopped working a few weeks ago and for the life of me I couldn't get it going again. iOS 6 fixed the problem :dunno:
Mine is fine too.
My cousin has had his wifi killed on his iPad. My iPhone 4S is okay :)
My ipad (3rd gen), iphone 3gs and iphone 4 have all been upgraded without a problem.