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