Next month, U.S. carrier T-Mobile is going to start selling the Dream, a Smartphone using Google’s Android OS, and developed by the Taiwanese HTC Group.

Android is an open-source mobile development platform and operating system, developed by Android Inc., a California Company which was acquired by Google in 2005. The platform is intended to give mobile developers more freedom and flexibility in creating applications for mobiles, and promote open standards of software in the field.

Google have decided to implement their software concept using a Smartphone developed by HTC and sold by T-Mobile, which will exclusively use the Android OS.

The decision to use only one hardware configuration for a software platform that is supposed to give more freedom to developers may seem odd, but Google have been known to released “unfinished” or at least certainly unpolished versions of their concepts then build up from that. A perfect example is their browser, Chrome. Implementing Android on other phone models is expected to happen once the platform matures.

While some have hailed the Android Smartphone as Google’s answer to such rivals as the iPhone and Windows Mobile, it is obvious that the HTC-produced device is more Google’s way of testing the waters. It isn’t likely to cause any market overturns. Yet.

The Android-equipped handset will be marketed by T-Mobile starting September the 23^rd, however no pricing information could be determined so far. Manufacturers HTC say they expect to ship around 600,000 to 700,000 units.