If you preform a factory reset, all the datas will be erased. The app will need to be reinstalled.
1. Unplug the power, press and hold the " VOL+" button at the lower back corner, plug in the power
2. It will go into the recovery mode.
3. Use the VOL+ ( UP) / ( DOWN) to move the curser up and down. Power button as " confirm/ okay"
4. Choose the " wipe data/ factory reset" and press " POWER" to confirm
5. Select " YES" and press " POWER" to confirm
6. Select " Reboot system now" and press " POWER" to confirm
7. The tablet should reboot now.