HT1695: iOS: Connecting to the InternetLearn about iOS: Connecting to the Internet
Currently Being ModeratedDec 5, 2012 6:15 PM (in response to flower143)
Not sure if it will help, but you can try going to Settings>General>Reset and tapping Reset Network Settings. Then power-cycle your wireless router (unplug it for 15 seconds, then plug it back in). Then try joining your wifi again.
Currently Being ModeratedDec 5, 2012 6:32 PM (in response to flower143)
^ what he said, plus, how old is your router?