Samsung SPH-D710ZKASPR - Manual (Page 43)

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If one of the people you called hangs up during your call, you and the remaining caller stay
connected. If you initiated the call and are the first to hang up, all callers are disconnected.
4. To end the three-way call, tap .
Call Forwarding
Call Forwarding lets you forward all your incoming calls to another phone number – even when
your device is turned off. You can continue to make calls from your device when you have
activated Call Forwarding.
Note: You are charged a higher rate for calls you have forwarded.
To activate Call Forwarding:
1. Press and tap .
2. Tap .
3. Enter the area code and phone number to which you want your calls forwarded.
4. Tap . (You will hear a tone to confirm the activation of Call Forwarding.)