In order to hard reset a Samsung Gravity SMART, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Samsung Gravity SMART device will be brought back to the default configuration of a brand new device.
1. Turn off the device.
2. Press'n'hold the T & Power buttons. Let go of them when an Android system recovery screen shows.
3. Using Volume buttons to navigate to it and Power button to select it, choose Wipe data/Factory reset option.
4. Next, select Yes and Reboot system now.
5. Yay, the hard reset process is complete.