why is my Samsung galaxy s5 screen glitching?

[AC Question]

My s5 screen is glitching after it has been on for half an hr. Even when I have resetted it. The screen goes black but the blue light on the top let hand corner works still charges can't the screen back on for days jus depending really

 

[B. Diddy]

Welcome to Android Central! Try wiping the cache partition: https://support.t-mobile.com/docs/DOC-28492 If that doesn't help, then does this happen in Safe Mode as well? https://support.t-mobile.com/docs/DOC-28456