In order to hard reset a Orange Reyo, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Orange Reyo device will be brought back to the default configuration of a brand new device.
1. Press the Power button until the phone turns off.
2. Now press and hold the Power & Volume Up buttons simultaneously. Let go of them when Recovery Mode starts.
3. Lets continue! A menu will open. From it, select wipe data/factory reset. To do so, use Volume buttons to navigate the menu and Power to select it.
4. Next, select Yes and Reboot System Now.
5. Voila! The phone should now reset and restart, completing theh hard reset process.