Using Caller Id - Samsung MM A880 Phone Manual

Using Caller ID

Caller ID allows people to identify a caller before answering
the phone by displaying the number of the incoming call. If
you do not want your number displayed when you make a
call, just follow these easy steps.
To block your phone number from being displayed for a specific
outgoing call:
1.
Press
2.
Enter the number you want to call.
3.
Press
To permanently block your number, call Sprint Customer
Service.
210
.
.
Section 3A: Sprint PCS Service Features: The Basics