How to factory reset SIEMENS AL21? How to wipe all data in SIEMENS AL21? How to bypass screen lock in SIEMENS AL21? How to restore defaults in SIEMENS AL21?
The following tutorial shows all method of master reset SIEMENS AL21. Check out how to accomplish hard reset by hardware keys and Vendor settings. As a result your SIEMENS AL21 will be as new and your core will run faster.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.