Originally Posted by rybocf
FYI, there's no such thing as a 4G IPhone....
Well, the "G" stands for "Generation", and what is confusing is that the terminology is used both to discuss the phone hardware generation (latest model of iPhone is the "iPhone 4") and also to describe the cellular network technology (3G vs 4G / LTE or Long Term Evolution).
You are correct of course that the latest "fourth generation" iPhone 4 works on cellular 3G networks only.
Even messier is that the term "4G" as applied to cellular networks does not mean the same thing to all carriers... it is a very squishy term.