It will remove all the data ,contacts and apps that you installed
Remove and insert the battery.
Press and hold together Volume Up + Home + Power button.
When you see the logo Samsung release Power button.
When you see little man Android release the rest of buttons.
Then if you see recovery menu select option "Wipe Data/Factory Reset" with Volume buttons and confirm with Power button.
Scroll down to "Yes -- delete all user data" and confirm with Power button.
If the operation is completed select "Reboot System".
Samsung Galaxy Star Pro S7260 Restore Factory Hard Reset Format Phone.So lets start the Samsung Galaxy Star Pro S7260 Restore Factory, Samsung Galaxy Star Pro S7260 Hard Reset.Turn Off the mobile phone for few mints.Samsung Galaxy Star Pro S7260 Remove Pattern Lock.
Restore Hard reset will set your phone in origional factorry settings. It will remove all the data and apps that you installed. Your contacts will be removed and you have to add them again.