Most Samsung mobile phones use Google's Android operating system, but a few models use Microsoft's Windows Phone operating system or Samsung's own Bada operating system. All three operating systems are designed to work well with modern touch-screen smartphones.
The popular Samsung Galaxy series of mobile phones uses the Android operating system exclusively. This open-source operating system is easily modified by phone developers to meet their needs. The Galaxy series includes a wide range of phones in a variety of sizes and price ranges. Other Samsung phones with the Android operating system include the Rugby, the Replenish and the Continuum. The Samsung Ativ line and the Focus use the Windows Phone operating system. The Wave line uses the Bada operating system.