Troubleshooting pairing your bluetooth iphone

did you mean via bluetooth? if yes please remove saved car kit devices from you phone and then try again with correct pass-codes

You need to pair with the gps first before you can use as handsfree. Turn on BT in your iphone and start to pair with the gps, there may be a code showing at the gps screen and then type the code on your phone, then they paired which means you can start to use it. Good luck.

Hi,
Begin troubleshooting with these steps first:

1. Check that you are in range of the Bluetooth accessory with which you are trying to pair your iPhone, iPad, or iPod touch. Most Bluetooth accessories have a range of approximately 30 feet.
2. On your iOS device, tap Settings > Bluetooth and find your device in the list. If your device says Not Connected, tap the name of your accessory to attempt to connect it.
3. Tap Settings > Bluetooth and turn Bluetooth off and then on again.
4. Make sure that your Bluetooth accessory is turned on and fully charged or connected to power.
5. Make sure that your Bluetooth accessory is in pairing mode.1
6. Restart your iOS device.
7. Tap Settings > Bluetooth and locate the Bluetooth accessory you are currently connected to or attempting to connect to. Then tap [img width="23" height="22" alt="" src="http://km.support.apple.com/library/APPLE/APPLECARE_ALLGEOS/TS4562/TS4562--i-01.png" data-hires="true"> and . Try to pair your Bluetooth accessory again.
   • Note: You may need to re-enter your Bluetooth accessory PIN if your accessory requires one. Some common PINs are 0000, 1111, and 1234.
8. Restart your Bluetooth accessory by turning it off and then on again1.
9. Update your device to the latest version of software. See how to update your iPhone, iPad, or iPod touch.
10. If your Bluetooth accessory has upgradable firmware, check to see that you have the latest version

Thanks,
Apple Support

It's probably not the speaker, your phone is not recognizing the device. This is the link How to troubleshoot Bluetooth Connections from Apple:

http://support.apple.com/kb/TS4562

On the iphone side you should go to bluetooth and turn it on ..it will automatically search for new devices ... as for the bluetooth headset should have a button for pairing . The procedure is explained in the earbud's user manual

Pairing with iPhone

1. Connect the iPhone Dual Dock or iPhone Bluetooth Travel Cable to a USB 2.0 port on your computer (not on the keyboard).
2. Connect iPhone and the headset to the dock or cable. The headset pairs with iPhone automatically.

Pairing iPhone Bluetooth Headset with another Bluetooth-enabled deviceTo pair the iPhone Bluetooth Headset with another wireless device, such as a Bluetooth-enabled phone or computer.
Step 1: Set the headset to be discoverable

1. Turn off the headset.
2. Press and hold the headset button for about eight seconds, until you hear the startup tone and then five quick high beeps.
   
   The headset is now discoverable and will remain so for about five minutes. The status light blinks while the headset is discoverable.

Step 2: Turn on Bluetooth on the other device and search for devices

1. On the device, turn Bluetooth on and set the device to search for other Bluetooth devices.
2. On the device, choose iPhone Bluetooth Headset and enter the PIN code 0000.

See the instructions that came with your other Bluetooth-enabled device for more information about pairing it with Bluetooth devices.

Hi, the iPhone 3G definitely does work with bluetooth. In fact, I'm talking on a bluetooth headset with my iPhone 3G right now.

You have to put both your Southern Telecom Emerson Bluetooth Headsetand the iPhone in "pairing mode".

On your iPhone, click the Menu button, tap the Settings icon, tap the General icon, and then tap the Bluetooth icon. Make sure that 'Bluetooth' is set to "ON" and not "OFF". As long as you have this screen up, your iPhone is in pairing mode.

Turn your Southern Telecom Emerson Bluetooth Headset off and wait a few seconds. On your Southern Telecom Emerson Bluetooth Headset, press and hold and Answer/End button for Five Seconds, until a solid blue light comes on, which places the device in Bluetooth discoverable mode.

Now that both devices are 'discoverable', the Southern Telecom Emerson Bluetooth Headset will show up on that Bluetooth screen on your iPhone. Be patient as it might take a minute to appear. Tap on the Southern Telecom Emerson Bluetooth Headsetin the list on your iPhone, and then it will ask you for a passkey. The passkey is "0000" (without the quotes). After you enter the passkey, the Southern Telecom Emerson Bluetooth Headset will show up on the list with the word "Paired" next to it.

Now you're paired! Incoming calls will automatically be passed to your headset as long as your iPhone can find it nearby.

Good luck.

On iPhone:
1) Go to Settings
2) Go to Reset
3) Select "Reset All Setting" (Make sure you save passwords. Data is safe.

On Bluetooth:
Clear all previous pairings.
Once iPhone reboots, turn on Bluetooth.

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

iPhone has had bluetooth since the first model in 2007. With iPhone OS/firmware 3.0 (free for all iPhone users), iPhones are fully A2DP compliant and link with Mazda bluetooth.
My current experience is with a 2010 Mazda3 and iPhone 3GS, where I get phone and iPod functionality via bluetooth (yes, without jailbreaking), though the steering-wheel controls are limited to play/pause and volume only.