Android permisions

[ATTACH=full]164268[/ATTACH]I am getting this prompt but when i go to settings nothing is changeable,how should it be changed and what is screen overlay??

I thought ni kitu ya maana

imenisumbua bana,nishow what the problem could be.

apparently the easiest way out is to factory reser your device

It means that you have to alter the permission settings for the WhatsApp appication on your phone. So ideally go to settings - Application Manager - WhatsApp and check it’s permission settings then change as desired.