Samsung SGH-A437DAAATT - Manual (Page 55)

Understanding Your Address Book 52
Management
3. Select Service Number, by pressing the Up or Down Navigation key and
press the Select soft key or the key.
4. Scroll through the numbers by using the Up or Down Navigation key.
5. To dial the number displayed, press the key.
Note: This menu is available only when your SIM card supports Service Dialing Numbers.