Hard Reset SIEMENS S4

How to factory reset SIEMENS S4? How to wipe all data in SIEMENS S4? How to bypass screen lock in SIEMENS S4? How to restore defaults in SIEMENS S4?

The following tutorial shows all method of master reset SIEMENS S4. Check out how to accomplish Hard Reset by hardware keys and Vendor settings. As a result your SIEMENS S4 will be as new and your core will run faster.

  1. Turn on the device.
    Remove Screen Lock on SIEMENS S4
  2. Now just type this: *#9999#
  3. Wait until your phone restarts.

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