If you've forgotten password of your Samsung Galaxy Tab and want to unlock the device. To unlock the device such tablet without password you've to hard reset the tab which is also called factory format.
How To Reset Samsung Galaxy Tab
Follow the step by step guides to hard reset the Samsung Galaxy Tab of any series or modal.
Step 1 :
Turn off the device (Samsung Galaxy Tab).
Step 2 :
Press and Hold the Volume Up and Power button at the same time.
Step 3 :
When the start up screen, release all the buttons.
Step 4 :
Use the Volume Up/Down button to navigate to "wipe data/factory reset".
Step 5 :
Tap on the "wipe data/factory reset"
Step 6 :
Tap on "Yes" delete all user data.
Step 7 :
Tap on "reboot system now".