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Personal 
Security 
  Screen lock: Disable the screen lock or enable it with PIN. 
See Personalizing – Protecting Your Phone With Screen 
Locks. 
  Owner info: Set the text that you may display on the lock 
screen. 
  Set up SIM card lock:   
  Lock SIM card: Activate or deactivate the PIN lock to 
require PIN before accessing the micro-SIM card. 
  Change SIM PIN: Change the PIN used to access the 
micro-SIM card. 
  Anti-Theft: Used to control the lost phone remotely. It‟s 
different from PIN. See Enabling Anti-Theft. 
Reset 
Factory data reset: Reset your phone to factory default 
settings. All your personal data from the phone‟s internal 
storage will be erased. You can also erase the data on the 
memory card during the process.