You can talk on iPhone hands-free using the optional iPhone Bluetooth Headset.
Using the iPhone Bluetooth Headset
The iPhone Bluetooth Headset, available separately, is unlike any other Bluetooth headset you've used before. It features autopairing and simple operation. You can pair iPhone with the headset simply by placing iPhone and the headset in the iPhone Dual Dock, which comes with the headset. Pairing sets iPhone to work with only one headset, preventing connections with other headsets.
Pair iPhone with the iPhone Bluetooth Headset
Connect the iPhone Dual Dock to your computer, then place iPhone and the headset in the dock.
The first time you connect the headset, let it charge for about an hour until the status light on the headset turns from amber to green. When iPhone and the headset are both in the dock, iPhone displays the battery level for the headset.
Connect the iPhone Bluetooth Headset with iPhone
Before you can answer or make calls with the headset, the headset must be wirelessly connected to iPhone.
Press the button on the headset.
When the headset is connected, the blue ([icon]) or white ([icon]) Bluetooth icon appears in the iPhone status bar at the top of the screen. (The color of the icon depends on the color of the current status bar.)
Make or answer a call
Place the headset in either ear with the microphone pointed towards your mouth.
Make a call on iPhone, or press the button on top of the headset to answer an incoming call.
When you finish, press the button to end the call.
Adjust the volume
Use the volume buttons on the side of iPhone.
Stop Using a Headset
There are a few ways to stop using a headset and go back to hearing calls through iPhone.
Route calls through iPhone
Answer a call by tapping the iPhone touchscreen
During a call, tap Audio on iPhone. Choose iPhone to hear calls through iPhone, choose Speaker Phone to hear calls through the speakerphone, or choose a connected Bluetooth device.
Turn off the headset or move out of range. You must be within 30 feet of a Bluetooth device for it to be connected to iPhone.
To turn off the iPhone Bluetooth Headset, press and hold the button until you hear the falling tones.
Unpairing a Device from iPhone
If you've paired iPhone with a device and want to use another device instead, you must unpair the first device.
Unpair a device from iPhone
From the Home screen choose Settings > General > Bluetooth. If Bluetooth isn't on, turn it on.
Choose a device and tap Unpair.
Until you pair the device with iPhone again, iPhone doesn't route calls through it.