Hi there, No they use a normal jack, but I did buy a converter to get them to work with my iPhone. The problem with this is the headphone cable is long, add the converter cable and you get a lot of slack wire. All good for lassoing other people's bags, buttons etc, on the London Underground and having the headphones torn from your ears.
Also the headphone set picks up, what I guess is the EMP pulse from the iPhone and makes that buzzy/click noise you hear when a phone is placed near a speaker. So pretty pointless if you want to use it in conjunction with a hands free cable.
On a personal note - although the noise cancelling does work, it certainly is not as impressive as I thought it would be.