T-Mobile was the first company to give the Android OS a shot with the HTC G1/Dream and has been very enthusiastic about supporting the Andrroid movement. Sure they can't offer warranties to modified phones (rooted phones) but they can't be expected to pay for other people's noobish mistakes. In any case, now T-Mobile is expanding its app portfolio by offering an Android app called Device Tune-Up. The app will proactively shutdown unused or old services to expand battery life and your phone’s overall performance.

Android Apps