In order to hard reset a Colorful Colorfly i818W 3G, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Colorful Colorfly i818W 3G device will be brought back to the default configuration of a brand new device.
1. Power up the phone: press-hold the Power button.
2. You will face Home Screen. From there, open Main Menu. Afterwards open Settings.
3. Now select Change PC Settings > Update and Recovery.
5. Remove everything and reinstall Windows.
7. Wait for around half an hour. Done.