Chosen Solution
My Galaxy s9 keeps rebooting and I already tried putting it in safe mode to see if it was an app and it still rebooted, and I factory restore the home and it still reboots and now it also will shut down and won’t turn back on until you press the power button, the phone was fully charged
If you’re having a similar problem go to your settings and turn off the fingerprint scanner, for some reason using your fingerprint scanner to unlock the phone causes the phone randomly reboot
When its connected to power doses the phone stay on? If so than probably a battery issue. Replace battery
This solution didn’t work for me. Any other suggestions. I troubleshot all the way through factory reset. But still having the issue.
I simply can’t use the screen while it opens again, and then the screen freezes completely to turn off again. FWI, little rainbow light on the top left corner when its reboots! It’s been doing this for an hour now…
Seriously thank you so much. I was about to trash this phone. I believe it is a water issue, so I’ll deal with that later, but so glad I can actually use my phone again