How to factory reset NEFFOS X9? How to wipe all data in NEFFOS X9? How to bypass screen lock in NEFFOS X9? How to restore defaults in NEFFOS X9?
The following tutorial shows all method of master reset NEFFOS X9. Check out how to accomplish hard reset by hardware keys and Android 8.1 Oreo settings. As a result your NEFFOS X9 will be as new and your MediaTek Helio P25 (MT6757CD) core will run faster.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.