Attention! If the device was introduced to a google account after the reset to factory settings via recovery menu, your phone will require her to enter for activation.
To reset on a Samsung Galaxy S10+ you need to enter recovery and perform a wipe. This is done by the following algorithm:
The phone will reboot with default settings.
If the phone is frozen and unresponsive, try to perform Soft reset. To do this, hold the button "Volume -" and "Power" for about 10 seconds. The phone will reboot. All data will be stored.