It will remove all the data ,contacts and apps that you installed
Power off Tab First.
Press and hold Volume Up + Home Button and Power keys together.
Release power button only
When android logo appear select with volume key wipe data factory reset option and press poer button.
Select (Yes...Delete all wipe data) then press power key
When tab formatted press power key to restart tab.
Select language and change other settings with your own requirement.
Samsung Glaxy Tab 3 SM-T211 Restore Factory Hard Reset Format Phone.So lets start the Samsung Glaxy Tab 3 SM-T211 Restore Factory, Samsung Glaxy Tab 3 SM-T211 Hard Reset.Turn Off the mobile phone for few mints.Samsung Glaxy Tab 3 SM-T211 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.