You can take it apart and reseat the flex cable on your sony k750i.
They come loose some times and cause a white screen. If that doesn't
fix it, you can replace the LCD screen for about 20 dollars.
Check out the link below:
How to Repair Sony K750i LCD screen
my sister has the same problem but different model help!!!!!!!! model w600i
my mobile screen turns white. all the functlons are working, but the screen remains white. how to solve this?
Automatically my mobile (k750i) the cam is Getting on
my mobile k750i Cam getting on automatically
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