Help grey screen of death!
My iPhone 6, has gone to a grey flickering screen, where the lock screen and time are barely visible this lasts for 20 minutes before it goes back to normal. Also I am unable to unlock my screen as it doesnt recognise my finger swiping/touching the screen. This keeps happening and has done multiple times before. I have taken it to the Apple Store and was told that it happens due to lack of storage on the phone. Could there be another reason??
iPhone 6, iOS 9.3.1