Having serious problems with Wifi and Gps since the beginning (Nov 2012).
I tried ALL possible solutions including sending the phone to the technical service where apparently they changed the mother board (with no change).
Simultaneously, I have an Xperia U working perfectly under the same conditions.
-Activating Wifi causes boot loop (but not always) Only many hours later the phone can be restarted.
-Gps works occasionally (while Xperia U is fine).
I have tried all possible solutions like repairing with SUS and restoring factory settings.
DEFINETLY IS A FIRMWARE PROBLEM since Gps and Wifi sometimes works and Xperia U also works perfect. (both with ICS)
Sending again the phone to the technical service is not a solution.
Please Sony brains. Do Something.
