Wall St. Journal:Walt Mossberg says that besides the price cut, the main difference between the iPhone 3G and the original iPhone are inside--the new iPhone runs on a much faster network for one thing. He cites that the battery life is much weaker than that of the first iPhone, and that during his weeks of testing, the iPhone 3G died on him a couple of times. Below his article is a nicely done comparative chart of the phones' respective specs.

"If you already own an iPhone, and can usually use Wi-Fi for data, you probably should hold off and get the free software upgrade before deciding whether it's worth getting the new hardware."--Mossberg

USA Today: Ed Baig loves the iPhone 3G's faster network and the GPS location-based service. He likes that it's business friendly--he was able to access his corporate email, calendar, and so on. Inside are 10 wireless radios that are not affected by the new plastic back (as opposed to the original iPhone's metal back.) He demonstrates in his video just how much faster the iPhone 3G is. But Baig can't access the 3G network everywhere, so it has to revert back to the slower network--possibly indicating that the iPhone 3G may be better in big cities where the networks are faster. Further, the 3G doesn't have expandable memory and the camera is still terrible (while you wont be able to take better shots with this phone, there is geotagging.)

"With a couple of reservations, I really like it a lot." --Baig

New York Times: David Pogue notes that the buzz for the second-generation iPhone isn't as huge as it was for the original was, stating that it's "...partly because the AT&T service costs more and partly because there aren't many new features in what Apple is calling the iPhone 3G." He says that while the iPhone 3G is cheaper in price, the network is much more expensive. Pogue also seems to realize, more so than the other reviewers, that the iPhone 3G (get this) is a phone! He likes it but says that that the big deal about it is iPhone 2.0 software and the App Store, neither of which requires buying a new iPhone.

Something to possibly be excited about: some of the new apps coming for the iPhone 3G (which do not require jailbreaking). iCall will give you free phone calls when you're in a Wi-Fi hot spot while G-Park, uses G.P.S. to help you find where you parked. The App Store will be available on the iPod Touch too (which can be turned into an iPhone, actually).

"The third improvement is audio quality, which has taken a gigantic step forward. You sound crystal clear to your callers, and they sound crystal clear to you. In fact, few cellphones sound this good."--Pogue