In order to hard reset a Highscreen Zera S, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Highscreen Zera S device will be brought back to the default configuration of a brand new device.
2. Now press and hold the Power and Volume Up buttons. Wait for the HIGHSCREEN/Android logo to appear and let go of them.
3. Select the wipe data/factory reset option - to do that, use Volume buttons to navigat and Power to confirm.
4. Select Yes.
5. And now select reboot system now.
6. The hard reset should now be complete.