This guide will show you a simple way on :
How to factory reset SAMSUNG S8500 Wave.
How to wipe all data in SAMSUNG S8500 Wave.
How to bypass screen lock in SAMSUNG S8500 Wave.
How to restore defaults in SAMSUNG S8500 Wave.
All method of master reset SAMSUNG S8500 Wave.
So Check out how to accomplish hard reset by hardware keys and through android settings. As a result your SAMSUNG S8500 Wave will be as new and your core will run faster.