Won't let me add, edit or delete contacts, it says restricted.
Your Phone Book access must have been limited to Read-Only. You need to set it to Full Access before you can add, edit or delete contacts. Here's are the steps to set it to Full Access:
1. Press Menu to display the Main Menu
2. Press 7 for Security and enter the Lock Code.
3. Press 2 for Limit Use
4. Press 3 for Phone Book, choose Full Access
5. Press OK to save the setting.