This guide will show you a simple way on :
How to factory reset SAMSUNG Rex 70 S3802.
How to wipe all data in SAMSUNG Rex 70 S3802 .
How to bypass screen lock in SAMSUNG Rex 70 S3802.
How to restore defaults in SAMSUNG Rex 70 S3802.
All method of master reset SAMSUNG Rex 70 S3802.
So Check out how to accomplish hard reset by hardware keys and through android settings. As a result your SAMSUNG Rex 70 S3802 will be as new and your core will run faster.