Just set up my IP5 from iCloud backup and the wifi kept going in and out during the restore. After a few minutes I noticed a correlation between how far away from my router I was and the signal completely dropping out - approximately 5 feet. Any further, and no signal whatsoever. Finally got it up and running after literally placing the phone next to the router and leaving it. I'm running iOS 6 on my 4S (using the same router) so I didn't think it was an issue with the OS, but I restored it anyway just in case. Still dropping wifi like crazy. Took it into the Apple store today and got a replacement which thankfully works fine - has anyone else had this weird wifi range issue?