Hard Reset SONIM XP3340 Sentinel

  1. Turn on the handset.
    Hard Reset SONIM XP3340 Sentinel
  2. Now scroll to Menu -> Settings -> Restore factory settings.
  3. Then zou should enter your password.
    * The default settings is: 0000.
  4. After that select OK, and press Yes.
  5. Next you will see, that your phone will reset and restarts.
  6. Success!

Hard Reset will erase all of your data
All described operations you are doing at your own risk.

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