Currently Being ModeratedFeb 13, 2013 11:29 AM (in response to AbdelrhmanShawky)
This troubleshooter will be better:
Currently Being ModeratedMar 9, 2013 1:58 PM (in response to sberman)
If the above suggestion doesn't work, also posted as reply to another thread on the identical issue:
For me it was a non-recoverable device failure. I've had the same issue on my iPhone 4S every since the 6.1 update at the end of Jan. I tried everything, network reset, all reset, restore from older backup. Updating to 6.1.1, then 6.1.2 did not help. I finally made an appt at the genius bar at an apple store and went in today. They tried everything too, opened it, did a full factory software wipe and reinstall (except for my data, of course)...still didn't work. I was told that the 6.1 update had messed up my 4S firmware and there's nothing more they could do. They suggested that I upgrade to iPhone 5 or get another 4S at my expense. I suggested that they restore my iOS to 6.0.x so that my phone could be fully functional again. Apparently there's no way to revert to 6.0.x. At which point I asked to speak to the manager. I explained that I had to be allowed the option to keep my phone and get my wifi working without having to buy anything. In the end, the manager agreed it was fair for them to give me a new iPhone 4S at their expense.
Additional Note: on my 4S, immediately after the 6.1.2 update, my battery was going from fully charged to fully drained in a fraction of a day. I once charged it fully, set it to airplane mode, and let stand overnight. By morning it was down to 15%. My take-away from all of this: iOS 6.1.x wreaks havoc with iPhone 4S hardware
Currently Being ModeratedSep 17, 2013 10:21 AM (in response to AbdelrhmanShawky)
This worked for me!
>go to settings and turn your airplane mode on as well as your do not disturb mode..
>turn your phone off.. wait for 3-5 minutes.. then turn it back on..
>then turn your do not disturb mode and airplane mode off..