This info comes courtesy of the spokesperson of carrier Swisscom, who has confirmed that Apple only activates the 4G LTE connectivity features of the iPhone 5 once it has ensured that the network is up to the task. The result of this is that Swisscom, which has recently launched its 4G network, wasn't able to activate 4G on the iPhone 5 right away, because Apple had to finish its testing first. This practice is surely annoying the carriers around the world, but it looks like Apple is in the position to do it. Of course, Apple is doing this for its own good (and for its customers' good), but we can imagine that if we were a carrier, we'd probably want to punch Apple in the face for doing this to us! On the other hand, if you are a carrier, Apple is probably better than no-Apple, so we guess it's a necessary evil.