Solved: How to reset Samsung I5801 Galaxy Apollo Android hard reset: Turn the phone off. Hold volume down and menu(central button) while...

1- Turn the phone off.
2- Hold volume down and menu(central button) while turning on the phone.
3- In Android system recovery select "Wipe data/factory reset".
4- reboot your system.

OR

USE THIS METHOD FOR hard reset your Samsung Samsung I5801 Galaxy Apollo Android phone:press *2767*3855#