The T-Mobile myTouch 4G Slide is designed and manufactured by HTC for T-Mobile's wireless network. It features a sliding keyboard. Instead of running HTC Sense for its user interface like many other HTC smartphones, it runs HTC Espresso 3.0 as it's graphical user interface. HTC Espresso 3.0 allows for only 5 home screens, where HTC Sense 3.0 has 7 home screens. The T-Mobile myTouch 4G Slide replaces the standard Android search button with a "Genius" button which starts the voice command application.