Hard Reset AVVIO L640

How to factory reset AVVIO L640? How to wipe all data in AVVIO L640? How to bypass screen lock in AVVIO L640? How to restore defaults in AVVIO L640?

The following tutorial shows all method of master reset AVVIO L640. Check out how to accomplish hard reset by hardware keys and Android 5.1 Lollipop settings. As a result your AVVIO L640 will be as new and your MediaTek MT6735M  core will run faster.

First method:

  1. Hold down the Power button for a couple of seconds to switch off the device.Hard Reset AVVIO L640
  2. After that start pressing Volume Up and Power keys for a short while.HardReset AVVIO L640
  3. Release the Power button when the CLARO logo pops up.
  4. If Recovery Mode appears let go of Volume Up.
  5. Now choose "wipe data/factory reset" by using Volume keys to navigate and the Power button to accept it.Wipe data on AVVIO L640
  6. In this mode select "yes" from the menu and click the Power key once.Master Reset AVVIO L640
  7. At the end choose "reboot system now" with the Power button.Factory Reset AVVIO L640
  8. Well done!

Help! This doesn't work