Iphone 4S suddenly will not connect to network. Was working fine after update.

Iphone 4S has been updated. Has been working fine. Today all of a sudden, searching for network. Texting through wifi works. Help. Tried removing and replacing sim card. Checked airplane mode, reset network settings. Any other ideas?

Turn off security just to test..
But you have tried all our work arounds.
If you want the fully operation airport utility.. download it.
http://support.apple.com/kb/DL1482
Do a factory reset and try again.
If it doesn't work, turn the wireless back on in the 2wire. There is nothing wrong with doing that. Lock it to channel 1 say and the TC to channel 11.
Does the phone now work?
If not the issue is the phone .. the upgrade has killed it... I suggest you take it back to apple for checking.

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