Prob: password
Procedure:1 open mrt,2 select oppo,3 select A12,4 click format unlock,5 press bot vol.(+ -)6 connect usb,7 click start.den wait till all is done.
Procedure:1 open mrt,2 select oppo,3 select A12,4 click format unlock,5 press bot vol.(+ -)6 connect usb,7 click start.den wait till all is done.