Walt Mossberg, the technology reviewer for the Wall Street Journal has a review of the G1, sometimes known as the gPhone. The G1 is Google's competitor to the iPhone. He says:

I have been testing the G1 extensively, in multiple cities and in multiple scenarios. In general, I like it and consider it a worthy competitor to the iPhone. Both devices run on fast 3G phone networks and include Wi-Fi. Both have smart-touch interfaces and robust Web browsers. Both have the ability to easily download third-party apps, or programs.

But the two devices have different strengths and weaknesses, and are likely to attract different types of users.

If you've been lusting after the iPhone's functionality, but didn't like its virtual keyboard or its user interface or its U.S. carrier, AT&T, the G1 may be just the ticket for you. But it does have some significant downsides.

By far, the G1's biggest differentiator is that it has a physical keyboard, which is revealed by sliding open the screen. The keyboard proved only fair in my tests, with keys that are too flat and that can be hard to see in bright light, and with a bulge in the body on the right side that you have to reach over to type. But, for the many people who can't stomach typing on glass, the G1 keyboard will be a welcome sight. It's complemented by a BlackBerry-like trackball for navigation.

From Google Answers the iPhone | Walt Mossberg
Referenced Thu Oct 16 2008 09:51:29 GMT-0600 (MDT)

I'm very excited to see the G1 come out. Competition for the iPhone can only make it and similar products better.