coz u not turning it on??

u all use screen protector for this phone??

if the wifi is yours...
try change the channel...

Sony

Please note that you may void the warranty of your phone and/or any warranty from your operator if you unlock the boot loader. See your phone’s warranty statement for details. Additionally, due to the modified phone software, Sony’s repair network will likely have to replace key components before it can properly test, repair and verify your phone using our repair tools and software. Consequently, if Sony performs a warranty repair, Sony will likely charge you a significant service fee for the additional costs caused by your modification of the software.

@Noish
well try to repair via Sony PC companion if you can't find solution if its still there then it might be hardware.

Go to the Android Setting (the one with spanner and screwdriver icon)> APP > All> Album
There you can find clear data!!
Thanks those who provide this tip here!!

i quite like the JB update especially the longer battery life and lower ROM utilization. i used to have easily beyond 80% utilization, now can maintain around 75%.
The main problem now is high rate of Xperia Home not responding. I restart everytime when it happen. no point to wait for it to respond which seems forever.

The phone dialer and messanger also seems slower to load!!

Anyone else face the same issue??