If you want to perform the Hard Reset operation, first of all, switch your device off. Slightly press the Power button for a while and select the Power off option to switch the phone off.
After that, press and hold the Power button together with the Volume Up button for a while just to make the Boot Mode appear on the screen.
At this point, scroll down to the Recovery Mode option using your Volume Up button to navigate and the Volume Down button to choose.
To skip the Android image, press the Power button together with both Volume buttons.
At this point, scroll down to the Wipe data/factory reset option using your Volume Upkey to scroll and the Volume Down button to choose.
To confirm your choice, tap on the Yes -- delete all user data option.
In order to restart your device, tap on the Reboot system now option, and wait until your phone is restarted.
Well done! Now you know the proper way to perform the Hard Reset operation on your OWN S3030D.