In order to hard reset a Samsung Galaxy Ace 3, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Samsung Galaxy Ace 3 device will be brought back to the default configuration of a brand new device.
1. Start by removing your phone's battery, SIM card and memory card.
2. Wait ten seconds and put everything back in.
3. Press and hold the Volume Up + Power + Home buttons. Release Power button when the Samsung logo pops onscreen.
4. Release the rest of the buttons when the Android logo pops on-screen.
5. Using Volume Down buttons to navigate to it and Power button to select it, choose Wipe data/Factory reset option.
6. Next, select Yes and Reboot system now.
7. Yay, the hard reset process is complete.