On the phone's "Emergency Call" screen, dial *#0*# to open the hardware diagnostic menu.
Open the SamFw FRP Tool on your computer and click the Remove FRP button. On the phone's "Emergency Call" screen, dial *#0*#
When a prompt for "USB Debugging" appears on your phone, select Always allow and click OK . On the phone's "Emergency Call" screen
Plug your Samsung phone into the PC using a USB data cable. On the phone's "Emergency Call" screen, dial *#0*#