In order to hard reset a O2 XDA Ignito, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
O2 XDA Ignito 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 Enter and Volume Down buttons.
3. Pick up Stylus and insert it into the hole on the lower right side of the device.
4. Wait until your phone resets and restarts. It may take a few minutes.