Yeah there is definitely some bug associated with the finger print scanner. I had the same problem as above where the phone turned off once it locked (I did not have this problem until just recently). I went through all of the online help (safemode, wiping the cache, etc. and nothing worked). I eventually had to do the factory reset and that fixed everything initially. Once I added back the fingerprint scanner option the problem came back. I guess I will just use the PIN feature until Samsung fixes this bug or they offer a decent trade in for an S10+.
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