Re: Unusable Android J5(6)

R.Wieser wrote:

I cannot even get that far.  The OS doesn't allow me further than the
"choose a WiFi network" screen, so it can "verify my identity".
 ... something that we won't be able to complete, because of what you quoted
in the above.(no knowledge about the phone or whats on it anymore)

I inherited my Dad's Samsung phone (not as old as your J5) and knew nothing of the credentials same as you, I wanted to wipe it and pass it on to a nephew.
Everything was pointing to it not being possible, but some combination of holding keys while standing on your head while powering it on did allow a factory reset and then setting up from scratch ... google for the exact model number not just J5, maybe be microscopic laser etching, or on a sticker inside the battery hatch if it's that old?