Unlocking in the US (to use on differing networks)

[Christo]

I need to buy a new mobile, will probably buy the HTC one (gsm) second hand however I'm not sure how unlocking works in the US. Does anyone know how easy it is to unlock out here, as in do the networks allow it? I suspect the one cant be unlocked using a 3rd party yet.

Any Passing friendly Anericabs out there?!

 

[Christo]

I will be in the US for 2 months or so, so the law for right of unlocking has expired, that's annoying. I haven't checked if a 3rd party can unlock will ask but as the phone is new I'm guessing not?
Thanks for the help man .