Locked screen on supposed factory reset phone, Plzzz help this is exhausting

[hmseymour004]

My nephew, who is extremely high on the spectrum is overly obsessed with his cell phones etc. Anyways he got a new phone and we are trying to sell his old one, the Galaxy s23 ! He stated that he cleaned it out and factory reset it (he says🤷‍:female_sign:) but now it's got us locked out because it has a pass code to open it and noone knows what it is. I've tried 17 times and have 2 more which are hours apart then they said they could help, unbelievable and unexceptable. Ughhh please can we go around this or no? Bout to throw phone out window ridiculous 😤😡😫

[meself]

Locked out with a pin or account

[Dinop43]

Is it google password or pin,swipe,

[usermzeJaY3BsM]

This is caused by them not removing their Samsung account before factory resetting the device.  You would need to use the PIN that they initially setup on the device, once you have that you can then setup the device with your Samsung account, then remove your Samsung account after setup completes, and then factory reset the device so that the former PIN is no longer required.