I bought the S20FE back in March and I had a random restart issue. When I purchased it I updated the phone and reset. Problem was it would hang sometimes and restart on you. I tried clearing the cache and resetting a few times and adding apps in small bunches. But believe that issue was fixed by a Google app update. But for some reason lately randomly the phone will ask for my pin instead of using bio metrics.
I have read that this is a security thing but does this happen 3 or 4 times a day? And when it does this, Spotify seems to open and be waiting in the pull down like a restart happened. Plus this morning I took phone off wireless charger and it put it self in safe mode. Im really starting to wonder if I got a dud.
From settings > Battery & Device Care > Tap 3 dots> Automation > Auto Restart at Set times > turn on, & pick atleast 2 days
Yea mine is set to restart once a week. I'll try doing 3 times but that is a heck of a quark this phone has then. My S8+ was like the Energizer Bunny and never really needed it.
auto restart only will work at the scheduled time and only under certain conditions, which are listed in the auto-restart settings. so if it restarted randomly, then something else could be causing the restart.
i'd submit an error report on members app > + button > error report when it randomly restarts again.