How to Hard Reset on Karbonn A21 A?

  1. The device must be on.

    Hard Reset keys Karbonn A21 A

  2. Hold down the Volume Up key and the Power button.
  3. When the screen turns red, release the keys.
  4. Then select "Wipe data/Factory reset" using the Volume keys and the Power button.

    Android system recovery Karbonn A21 A

  5. Choose "Yes" using the same keys.
  6. Press "Reboot system now" to complete the process.
  7. That's all! After these actions, the data on your device will be deleted.

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