At the Enter Unlock Code prompt:
Press | To  | |
1  | keypad keys  | enter your unlock code  | 
  | 
  | 
  | 
2  | OK (+)  | unlock your phone  | 
Setting Your Phone to Lock Automatically
You can set your phone to lock every time you turn it off:
Find the Feature  | M > Settings > Security > Phone Lock  | |
  | 
  | > Automatic Lock > On | 
Press | To  | |
1  | keypad keys  | enter your unlock code  | 
  | 
  | 
  | 
2  | OK (+)  | activate automatic lock  | 
If You Forget a Code, PIN, or Password
Your phone’s 
If you forget your unlock code, try entering 1234 or the last 4 digits of your phone number. If that does not work, at the Enter Unlock Code prompt:
Press | To  | |
1  | M  | display the unlock code bypass  | 
  | 
  | screen  | 
2  | keypad keys  | enter your security code  | 
3  | OK (+)  | submit your security code  | 
Learning to Use Your Phone - 43