WiFi stop working when 9.2.1 upgrade... A does restore the network configuration and still does not!

from one day to the next my phone is suddenly being updated to 9.2.1. Since then my wifi was NOT working period. Have excellent wifi signal and still absolutely nothing. I reset the network settings and nothing works. Never been a problem until this 9.2.1 update

I have the same problem after updating ios 9.2.1

Tags: iPhone

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