How to factory reset PHILIPS S309? How to wipe all data in PHILIPS S309? How to bypass screen lock in PHILIPS S309? How to restore defaults in PHILIPS S309?
The following tutorial shows all method of master reset PHILIPS S309. Check out how to accomplish hard reset by hardware keys and Android 4.4 KitKat settings. As a result your PHILIPS S309 will be as new and your MediaTek MT6572M core will run faster.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.