It will remove all the data ,contacts and apps that you installed
Check that your phone is on.
Next from the Home screen press Menu -> Settings -> Backup & reset -> Reset device -> Erase everything.
Confirm your choice, and wait to finich operation.
Press Power button, until your tablet is off.
Now press and hold together: Volume Up + Home button + Power button, until you see Recovery mode.
Then select "wipe data / factory reset" using Volume buttons to navigate and Power button to confirm operation.
Next choose option "Yes -- delete all user data".
After that confirm option "reboot system now".
Samsung Galaxy Tab 3 T310 Restore Factory Hard Reset Format Phone.So lets start the Samsung Galaxy Tab 3 T310 Restore Factory, Samsung Galaxy Tab 3 T310 Hard Reset.Turn Off the mobile phone for few mints.Samsung Galaxy Tab 3 T310 Remove Pattern Lock.
Hard Reset,Restart Problem,Restart Solution,Restore Factory,
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.