In order to hard reset a Micromax A57 Ninja 3.0, you should perform the following steps.

Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Micromax A57 Ninja 3.0 device will be brought back to the default configuration of a brand new device.


1. Power down the phone.

2. Press'n'hold the Volume Up & Power buttons until a Recovery mode menu appears.

3. From that menu, select the wipe data / factory reset option.

4. Next, select Yes -- delete all user data and reboot system now.

5. Done.