of  the  SIM  card  illegally  used  in  the  stolen 
phone)  are  required.  After  these,  guardlock 
function will work.   
  Off:  To  deactivate  guardlock  function,  you 
should input correct Guardlock password. 
  Change  password:  Modify  guardlock 
password. 
  Warning: 
Please use this function carefully. The  phone 
won’t be used if password forgotten.