How to Master Reset on Sony ST27a Xperia Advance?

  1. Make sure you turned off the phone.

    Hard Reset keys Sony ST27a Xperia Advance

  2. Hold down the Volume Up key and the Power button.
  3. Wait until a new menu appears and then release the keys.
  4. Follow the instructions on the display to finish the process.
  5. That's all! After these actions, your phone data will be deleted.

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