I have iPhone and the headset was worke will thin I don,t know why it is not parked now and the tel.get me massage say it can't pair

Make sure that the headset is not paired with the iPhone (turn off Bluetooth on your iPhone temporarily). Follow the same procedure you used to pair the iPhone, but this time with your iPad.

Goto Preferences (the gray gear icon - should be on your home screen
Then Bluetooth
Turn your headset on (on my phone this is done by flipping down the plastic tab that touches your upper cheek
The iphone screen should then see it and ask for a pairing
If it doesn't, one by one press any other adjacent icons until you see the request to enter the Pairing passcode

If you don't know the pairing passcode, most headsets use 0000, but if that doesn't work you will have to enter into a Google search
"(Your headset brand and model) Bluetooth Passcode"
and search the resulting links until you find it

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.

Motorola Default unchangeable pin is 0000

https://motorola-global-eng.custhelp.com/app/answers/detail/a_id/12462/~/pairing-pin-code

Here is something to try on your iPhone. Hopefully it should fix your problem.

On the iphone, delete all the headsets you may have used from the UI of the iphone.
Turn off the headset.

Warm reset the iphone, press and hold the home and power keys on the iphone for 10s, the screen will go blank and the phone will reset.

While the iphone is rebooting, turn on the headset again and put it into pairing mode with the LED flashing red/white, red/white ...

Now when the iphone is ready, make it search for the headset.

When you see the "9xxPlantronics - Not Paired" entry on the iphone UI, then tap the screen where this message is displayed and the iphone will pair to the headset.

Good luck from Headsets Direct - 800-914-7996.

Yep it will work, but you cant have Auto Answer facility in iphone.....Hav Paired the same with my motorola headset

Yes, you can pair your iPhone with any bluetooth headset. I have used many different Plantronics headsets and all have worked perfectly.
On the iPhone, go to Settings (the gears icon), click GENERAL, then Bluetooth and make sure it's switched to "On". Then, follow the pairing instructions that come with the headset.

duh iPhone and Samsung are DIFFERENT iPhones don't really pair up w/ the EM227 sorry buddy :(

i actually got this to work with my iphone 3G S. i pressed the little black button then saw a blue light flash, and then i pressed and held the + volume button and the call control button until it started blinking blue and red and my iphone picked it up instantly. it did take a couple of times to get the headset to go into pairing though

you need to have the manual for hour jawbone headset and follow those instructions.  You have to put the headset in "pairing mode" and then once you do that (follow headset instructions) it's simple to just go to settings, bluetooth and tell iphone to search for the headset.  
Instead of headset issues, we're having car speaker phone issues.  I have the iphone paired with a motorola bluetooth car speaker, and it works when you are making calls.  However when a call comes in, the speaker doesn't pick up, the phone just rings as normal.  That's a problem as you need to be hands free in our state, and if a cop happens to see you, you're in for it