Samsung SGH-A437DAAATT - Manual (Page 32)

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8: Security
1: Lock Phone
2: Lock SIM Card
3: Check PIN Code
4: Lock Applications
5: Show Caller Information
6: Set FDN Mode
7: Change Phone Password
8: Change PIN Code
9: Change PIN2 Code
9: Reset Settings
10: Memory Status
1: Shared Memory
2: Messaging
3: My Stuff
4: Address Book
* Shows only if supported by your SIM card.