Instruction How to Hard Reset Asus Zenfone Selfie ZD551KL
- When device is off, press (also hold) volume down key and then press (also hold) power key.
- After the device vibrates, release power key (keep holding volume down key) to enter recovery mode.
- Select “wipe data/factory reset” by volume down key (or volume up key), and then press power key.
- Select “Yes — delete all user data” by volume down key (or volume up key), and then press power key to start reset.
- After reset is completed, select “reboot system now” and press power key to reboot your device