W580 screen issue

[Gigman]

1. Srceen is going bad. Remove screen from phone and leave connected. Turn on phone and lightly move it around left to righ back and forth. If it gets worse then replace. Test with known working screen.
2. Bad connection. Remove, clean and re-install.
3. Bad cable/s. Change cable/s

[Mourad120]

Well as far as i know , the main reason would be Lcd-Module getting faulty or flex cable . change or replace