Lag and dead screen

[Kartrax68]

It has been over a year and half.
Initially the phone worked perfect,but after a year it started getting bugs. gor now i am

getting lag on high performance games(even of 40 MB) and rightmost part of screen works only after few hard clicks.

[alexrx]

Hi there,

Repair the phone using Sony Update Service

Before that, dial *#*#7378423#*#* > Service Tests > test your Touch Screen.

Cheers.

[saif_ullah]

I have the same situation with the screen. I cannot pick up a call. The screen dies in the middle of scrolling. I have tried the upgrading. It did not work. In Xperia J I used a calibration tool from xda which worked like a magic. Is there any bright idea? If not this is my last sony product.