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When call waiting is turned on, you can answer a new call without ending your ongoing call.
1. Find "Call waiting"
Press the Navigation key.
Select Call settings.
Select SIM call settings.
Select Call waiting.
2. Turn call waiting on or off
If you want to turn on the function, select Activate.
If you want to turn off the function, select Deactivate.
3. Return to the home screen
Press Disconnect repeatedly to return to the home screen.