A71 locked phone

[Beebee76]

Hi

I have Galaxy A71,  which I am now locked out of, currenlty to many attemps. I recently transferred SIM to new A55 and was hoping to factory reset the A71 to give to my Son. How can I unlock or factory reset phone, all obvious attemps tried.

[RCFitzhugh]

Do a hard reset. It starts with the phone off and completely wipes EVERYTHING. I forget the exact process but easy to find on line.