How to Hard Reset on Microsoft 640 XL Lumia?

  1. Make sure you turned off the device.

    Hard Reset keys Microsoft 640 XL Lumia

  2. Hold down the Power button and the Volume Down key.
  3. When the phone vibrates, release the keys.
  4. Then hold down only the Volume Down key.
  5. Wait until the exclamation mark appears and then release the key.
  6. Now press the keys in this order: Volume Up, Volume Down, Power and Volume Down.
  7. That's all! After these actions, your device data will be deleted. 

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