In order to hard reset a Anycool I89, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Anycool I89 device will be brought back to the default configuration of a brand new device.
1. Start by switching on the device. Press and hold Power button.
2. Open Menu > Settings.
3. Continue by selecting Reset > Master Reset.
4. Complete the process by selecting Yes and tapping in the 1234 safety code.
5. Well done, the hard reset is now complete.