I've had my iPhone for a while now (longer than a year I think) and I haven't had any trouble with it before but my wifi was playing up yesterday so I turned it off and I tried to turn it back on and it greyed out so I can't even turn it on anymore. I've had a look on the internet to see about other people having the same problem and a lot of people have been saying it's because of the iOS6 update but I've had the update for a while so I'm not sure what it could be.
I've tried turning it off and on again multiple times and resetting my network settings and I've done a reboot by holding down the home button and sleep button, but nothing seems to be working. Does anyone have any ideas on what I should do to get it working again? Thanks.