Your primary uses for Bluetooth might be with Bluetooth headphones, Bluetooth stereo adapters, or a Bluetooth headset. any Bluetooth headphones should work well with your iPhone 4. To start using any Bluetooth device, you need to first pair (connect) it with your iPhone 4.
The first step to using Bluetooth is to turn the Bluetooth radio On.
1. Tap your Settings icon.
2. then, touch General.
3. you will see the Bluetooth tab in the right-hand column.
4. By default, Bluetooth is initially off on the iPhone 4. Tap the switch to move it to the On position.
TIP: Bluetooth is an added drain on your battery. If you don’t plan on using Bluetooth for a period of time, think about turning the switch back to off.
As soon as you turn Bluetooth On, the iPhone 4 will begin to search for any nearby Bluetooth device—like a Bluetooth headset or stereo adapter (see Figure 6-1). for the iPhone 4 to find your Bluetooth device, you need to put that device into "pairing mode." Read the instructions that came with your headset carefully—usually there is a combination of buttons to push to achieve this.
TIP: Some headsets require you to press and hold a button for five seconds until you see a series of flashing blue or red/blue lights. Some accessories, such as the Apple wireless Bluetooth keyboard, automatically start up in pairing mode.
Once the iPhone 4 detects the Bluetooth device, it will attempt to automatically pair with it. If pairing takes place automatically, there is nothing more for you to do.
Figure 6-1. Bluetooth device discovered but not yet paired
NOTE: in the case of a Bluetooth device, such as a headset, you may be asked to enter a series of numbers (passkey) on the keyboard itself. see Figure 6-2.
Figure 6-2. Type in the four-digit passkey when prompted during the pairing process.
Newer headsets like the Aliph Jawbone ICON, used here, will automatically pair with your iPhone. Simply put the headset into pairing mode and turn on Bluetooth on the iPhone—that’s all you have to do!
Pairing will be automatic and you should never have to re-pair the headset again.
If your headset is properly paired and on, all incoming calls should be routed to your headset. Usually you can just press the main button on the headset to answer the call or use the Slide to answer function on the iPhone.
Move the phone away from your face (while the iPhone is dialing) and you should see the indicator showing you that the Bluetooth headset is in use. in the image you see that the Speaker icon is next to the "Jawbone ICON" Bluetooth headset.
You will also see the options to send the call to your iPhone handset or to the "Speaker" phone. you can change this at any point while you are on the call.
Touch hide Sources and you will see the normal call screen on the iPhone.
Options when on a Call
Once the call is made and you are speaking with your contact, you can still re-route the call to either the iPhone or the speakerphone.
Move the call away from your face (if it is near your face) and you will see Audio Source
as one of the options for you to touch. Touch that icon and you will have all the options for rerouting the call, as shown previously.
Just choose to send the call to any of the options shown and you will see the small Speaker icon move to the current source being used for the call (Figure 6-3).
Figure 6-3. Changing from Bluetooth headset back to the iPhone while on a call