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Phone shutting down after screen switchs off and over heating

I assume many might have faced the same problem and i think the issue is with the latest updates. Here is my issue and solution:

My S9 has been heating up on any app and once the screen is off, the phone shuts down authomaticly. 

I tried all solutions: deleting recently installed apps, clearing cach, and even factory rest. None worked. 

Then I found the problem: fingerprint sensor!! Yes. Once I turned off the fingerprint security the problem was solved. No more shutting off and no more heating up. And to make sure, I switch the fingerprint on a few days later and problem was back immiediatly. 


So if you have the same peoblem, before deleting everything and rest your phone, turn fingerprint security off for your luck screen security.