T-Mobile's version of the Samsung Galaxy S -- the Vibrant -- holds up well when pitted against the Captivate. It lags the Captivate in a few places, while besting it in others.

Samsung's Android-based Galaxy S Vibrant-a clear challenger to Apple's iPhone-is a knockout in quite a few substantial ways, but its screen is what will make you fall in love at first sight. It's ...

The Vibrant's battery life is really good, but doesn't quite match the Captivate. With the cellular radio, Wi-Fi, GPS, and Bluetooth on, I was able to make it through just under two days of use.