Hard Reset SIEMENS S66

How to factory reset SIEMENS S66? How to wipe all data in SIEMENS S66? How to bypass screen lock in SIEMENS S66? How to restore defaults in SIEMENS S66?

The following tutorial shows all method of master reset SIEMENS S66. Check out how to accomplish hard reset by hardware keys and Vendor settings. As a result your SIEMENS S66 will be as new and your   core will run faster.

First method:

  1. Check your phone, if is on.
    Remove Screen Lock on SIEMENS S66
  2. Then press this in sequence:: *#9999#
  3. Success!

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Hard Reset will erase all of your data.
All described operations you are doing at your own risk.
Help! This doesn't work.