When the first iPhone came out, a lot of noise was made about the lack of 3G. Specifically, battery life was cited by lots of people as the primary reason for this apparent oversight. Headlines like "Jobs: battery life issues delaying 3G iPhone" even suggested that battery life was the canonical reason for no 3G.
This kind of headline actually made Apple look a little stupid. Other phone makers have long managed to get 3G with decent (in fact, often excellent) battery life. If Nokia could do it, why not Apple? But, in fact, the release of the 3G iPhone makes it clear: battery life, while an issue, wasn’t the only reason for the lack of 3g in the first iPhone.