Screen doesn't respond for some reason.

[WasteSomeTime]

Hi. The screen on my phone sometimes stops responding. It has just started yesterday. Locking and unlocking the screen fixes this. However when the screen doesnt respond, the capacitive buttons do.
Have any of you experienced this issue?

 

[Nabkawe5]

By any chance is this (non responding issues) present when you charge your phone?

 

[Nabkawe5]

anyways the list of reasons for this are simple.
Dust/oil/dirt on the screen
Proximity sensor is dusty (Blow into the earpiece gently to clean the dirt out of the sensors.)
Some apps are causing trouble ( Whatsapp seem to *uck up the whole system when I install it ) .