In order voice dialing to work through a Bluetooth device, you must first have paired your device to a compatible Bluetooth headset. For more information on pairing Bluetooth devices, see the Bluetooth category.
To use voice dialing with a compatible Bluetooth device, press and hold on the Search button on the handset, speak from the Bluetooth device when the prompt is displayed on your device.
You can use keywords like "call <contact name> <contact type>". For example, "call John Smith home" will call John Smith's home number.