Hard Reset SAMSUNG T239C Galaxy Tab 4 Lite 7.0 TD-LTE

First method:

1. Turn off the device by pressing Power key for a short while.
2. Now keep holding on Volume Up, Home and Power button for a couple of seconds.
3. Stop pushing this keys when Samsung Logo pops up on the screen.
4. After that choose "wipe data / factory reset" by using Volume buttons to scroll down and Power key to confirm it.
5. Now select "Yes -- delete all user data". Use the Volume keys  to navigate and Power button to choose this.
6. At last just tap "reboot system now".
7. Perfect!

Second method:

1. At the very beginning use Power button to turn on the device.
2. After that go to Settings -- > Backup&Reset.
3. Now choose Factory Data Reset and Reset Device.
4. Tap on Erase Everything and clear all your data. 
5. Select OK if you want to launch the process.
6. Well done! The hard reset is done.

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WARNING !
Hard Reset will erase all of your data
All described operations you are doing at your own risk.