My display freezes and shows colors

[MareGraphics]

Hello, so my phone (Samsumg Galaxy J7 Pro) suddenly started showing colors only on display from time to time, and when I touch the screen everything comes back to normal..
http://i.imgur.com/jxxHkkz.jpg

 

[belodion]

Back up your personal data while you still can in case it’s an impending hardware failure.

Test whether it happens in Safe Mode, and also without an SD card if you are using one.