In order to hard reset a AIRIS T480, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
AIRIS T480 device will be brought back to the default configuration of a brand new device.
1. Turn off the phone by pressing and holding the ON / OFF button.
2. Press and hold the Volume Up + Volume Down + Power buttons.
3. Your phone should now reset and restart. Done.