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@mariador77
First thing to try, boot on safe mode safe mode
Does it detect other wifi?
Backup everything and repair the phone with PCC
PC Companion (PCC)
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
You should contact your local Xperia Care to get your phone inspected.
http://support.sonymobile.com/global-en/contactUs/
@mariador77'
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