Samsung Galaxy S6 screen randomly lights up repeatedly

[AC Question]

I have a 32 GB S6 on t-mobile. When I lock the phone w/ the power button, the screen randomly lights on and off. There are no notifications popping up on the screen. I have cleared all the apps in the background. But the screen and buttons keep lighting up randomly.

All apps are up to date, the system is running on 5.1.1. This drains my battery like crazy. Any suggestions?

 

[belodion]

A faulty power switch perhaps?

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