In order to hard reset a Micromax A89 Ninja, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Micromax A89 Ninja device will be brought back to the default configuration of a brand new device.
1. Press the Power button until your smartphone turns off.
2. Press'n'hold the Volume Up & Power buttons until Recovery Mode appears.
3. Using Volume and Power buttons, select the wipe data/factory reset option.
4. Now select Yes and Reboot System Now options.
5. The hard reset process is complete. Congratulations.