Starting to have a couple of issues with my Nokia 8. If i'm using an app and come away from it i can still see remnants of the app on the screen when i open something else. The touchscreen failed on me the other day and refused to operate. A forced shutdown holding the power button wouldn't work. All the hardware buttons would function properly. Came good after a few minutes and hasn't happened since. Will get it sent in to a repair centre to get the screen looked at.