Currently Being ModeratedMar 26, 2013 5:06 PM (in response to mohdfairos_my)
Settings/General/Reset - Reset Network Settings. If you can't turn WiFi on see: http://support.apple.com/kb/TS1559
Currently Being ModeratedMar 26, 2013 6:50 PM (in response to Lawrence Finch)
I did this "fix" and it worked...for awhile. Wifi went out again and is now greyed out and none of the suggested work abounds are working now. I hope that Apple corrects this soon!!!