The T-Mobile myTouch 3G capitalizes on the personalization capabilities of Google's Android operating system for the ultimate, customized experience. The myTouch keeps the best features of its predecessor, the tech-savvy T-Mobile G1, such as the trackball and large, crisp touchscreen, while improving battery life, increasing on-board memory, a rotation-oriented virtual keyboard, and more. Updated to a standard 3.5MM stereo headset jack so you can use your own headphones. In addition to Google's most popular apps like YouTube and Picasa, myTouch is pre-loaded with Sherpa, a T-Mobile exclusive app that can identify a user's location and display local information, such as shops and restaurants. While this kind of app isn't new, what is revolutionary is that Sherpa can learn and remember what you like and don't like, allowing it to create customized recommendations. It is like having a very smart, personal concierge in your pocket.