i have this problem with my k770i. when i on the phone the display is fine. but once if my phone goes to stand-by mode and i press any key to reactivated the screen, nothing appears. just a soft light appear but no display.

The phone is on. i can play music and everything but there is no display. i have tried to off and on my phone but same problem. i have tried changing the software and display driver but still same problem.

i cant use the phone because of this problem. My friend said it might be lcd problem but if its lcd problem there should no display at all. My phone there is display until it goes to stand-by mode. last time i master reset and the phone was ok. but now i tried but still same problem.