How to reset androd phone

This is not a trick but it's real, you can reset some or even all androd phone,just by a simple way, follow this steps (1)hold the power key(the oning) and at the same time hold the minuz key(the place to reduce the volume) together. (2) some thing will appear,haveing many things,like reboot, backup from sd card, wipe user data/entries.etc. (3) look for wipe user data/entries click on it,it will show some things, go back and click on reboot and leave it to on by itself. That's all