In order to hard reset a DEXP Ixion P4, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
DEXP Ixion P4 device will be brought back to the default configuration of a brand new device.
1. Power down the phone.
2. Now press'n'hold the Power and Volume Up buttons at the same time. Let them go when an Android icon pops on-screen.
3. Then select wipe data/factory reset. Do that by using Volume and Power buttons.
4. Select Yes from the newly opened menu, confirm with Power button.
5. Lastly, use Power button to select reboot system now. Voila!