Samsung SPH-M610DAASPR - Manual (Page 114)

88 Section 2C: Setting Your Phone’s Security
Changing the Lock Code
To change your lock code:
1. Select Menu > Settings > Security.
2. Enter your lock code. (The Security menu is displayed.)
3. Select Change Lock.
4. Enter your new lock code and press .
5. Re-enter your new lock code and press .
Lock Services
This setting allows you to lock voice call functions and
Sprint PCS Vision/Sprint Power Vision
SM services. When you
enable Lock Services, you will be unable to make new calls
(excluding emergency numbers) or to access the Vision
services until the lock has been disabled in the Security menu.
Locking Voice Services
1. Select Menu > Settings > Security.
2. Enter your lock code. (The Security menu is displayed.)
3. Select Lock Services and press .
4. Select Voice and press .
5. Select Lock and press .