Reporting its second-quarter financial results today, AT&T revealed that the iPhone continues to be both a long-term boost and a modest short-term drag on the company. The exclusive U.S. iPhone carrier said it handled more than 2.4 million iPhone activations in the quarter, partly due to the iPhone 3GS launch, and increased its overall 3G smartphone subscriber based by more than 3.5 million. The large number of iPhone purchases also came with…
