T-Mobile did a good job with the Sidekick

Yes, It's true the Sidekick is a great phone, but it isn't T-Mobile's. T-Mobile is simply the carrier the supports the Sidekick. Actually, the phone was created by Danger Inc. All data services are hosted by Danger, including AIM, Yahoo, and the Web Browser. The phone is through the T-Mobile wireless network.

And further more...it is not a sidekick. That is what T-Mobile named it. It is actually called a Hiptop. On different websites, it is referred to as a hiptop, and some people may get confused about what a hiptop it. So just remember this simple guide: hiptop = sidekick, hiptop 2 = sidekick 2.