Surface Duo

The Microsoft Surface Duo is a dual-touchscreen Android smartphone manufactured by Microsoft. Announced during a hardware-oriented event on October 2, 2019 and officially released on September 10, 2020, it is part of the Microsoft Surface series of touchscreen hardware devices, and the first device in the line that does not run Windows. It also marks Microsoft's first smartphone since the dissolution of Microsoft Mobile and the Windows Phone platform.
A successor, the Surface Duo 2, was unveiled in September 2021.