This guide will show you a simple way on :
How to factory reset SAMSUNG Galaxy M30.
How to wipe all data in SAMSUNG Galaxy M30.
How to bypass screen lock in SAMSUNG Galaxy M30.
How to restore defaults in SAMSUNG Galaxy M30.
All method of master reset SAMSUNG Galaxy M30.
So Check out how to accomplish hard reset by hardware keys and through android settings. As a result your SAMSUNG Galaxy M30 will be as new and your core will run faster.