Apple cannot search for wireless network after IPHONE4/4S/5 upgrade iOS7

Problem phenomenon

4S suddenly do not search the network signal, even if the search, after 1 minutes will automatically disconnect, in search, in disconnect, so the wireless cycle, I am in the place is a small place, no way to overhaul the Apple phone ah, how to do?

Solutions

First, click Set-General-Restore-Restore network settings, and then reboot after the try.

Second, the above method can not be resolved, the proposed call 4006272273, transfer to the Customer Relations department, let them help you solve