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Phone Call hangs... and i have to power off the phone... but power off also hangs at "shutting down"... then power and volume key for 5 seconds restarts the phone..... next day it happens again.... whats the solution.. when this happens i'm unreachable for both sims... i can't recieve calls.
It'll be wise to back up your phone and repair it with PCC
Bridge (for Mac)
Alternatives on How to backup Xperias