I have an oppportunity to buy an unlocked iPhone from a friend whose getting the latest iPhone as he is re-newing his contract. I heard that the unlocked phone only works until the next update. Is that still the case? What are the risks of not accepting these updates, assuming that I have a choice. Problem is that I have a fantastic deal with my current supplier, but want an iPhone. Any one had good/bad experiences in the un-locked version? I am not overly bothered with the application side - happy to pay my £2 for the specific application that I want.