try mo pong i hard reset via recovery mode, i off mo muna yung phone tapos sabay mong ipress and hold ang volume down at power button tapos pag nagvibrate release mo yung volume down tapos press volume up button, Bitawan mo na mga button kapag lumabas na ang select boot mode, Piliin mo yung recovery doon sa bootmode, pag lumabas na yung android robot, press home button tapos sa recovery, choose wipe data factory reset delete all user data at wipe cache partition. tapos reboot