In order to hard reset a Samsung Ativ Odyssey I930, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Samsung Ativ Odyssey I930 device will be brought back to the default configuration of a brand new device.
1. Switch off the phone.
2. Now press and hold the Volume Down and Power buttons. Release them when an exclamation mark appears on-screen.
3. Now press these buttons: Volume Up > Volume Down > Power > Volume Down.
4. Wait for your phone to reset & restart. Done.