Phone became completely unresponsive. (not wet or dropped or battery)
My Samsung Galaxy S10 never had issues, was fully charged and just basically crapped out. It froze at one point while using it, then the screen looked as though it was just turning on, then black, then turning on, then black a few times. Eventually it just wouldn't do anything. I've tried all combinations of Force Restart buttons, while unplugged and while plugged in. I've also opened the phone (for the first time) and unplugged the battery, then replugged, thinking maybe this would force a boot. Still just unresponsive. No vibration, no power indicator light, nothing.
I bought and tried a new battery by disconnecting the old battery and clipped in the new battery. (I did not 'remove' the old battery, and I did not close the phone). Still nothing.
I've searched iFixit, youtube, the internet, etc.. but can't seem to find anyone describing my exact issue / symptoms. I see that I can replace the screen, but with no power indicator and no vibration, I don't think a new screen would be the fix.
Can anyone suggest a better way to diagnose my phone to identify what it needs?