Exclusive: 2nd Generation iPhone Can Freely Convert Between 3G and 2G

CB insider messages, 3G version of the iPhone can switch 3G mode freely. After the 3G function is turned on, the data transmission speed increases, but it consumes much more power than when it's off. In terms of the body, there's not much change in the appearance, and the body comes in two colors, black and white. The machine screen is no longer the same as the first generation's touch screen and LCD integrated screen.