One of the most popular programs to test Internet speed on a desktop computer is Speedtest.net. Now you can test your mobile upload and download speeds directly on your Android phone!

T-Mobile has made it known that they plan on increasing their HSDPA speeds by year-end. Now you have a simple way to test speed increases on your Android phone. Speedtest.net works very consistently, just as you would expect. This surpasses other 3G speed tests in the Android Market in reliability, interface, and speed to run a test.

Speedtest.net is a free application available in the Android Market.

(Via Android and Me)