Microsoft (NASDAQ: MSFT) recently unveiled its first Android phone, the Surface Duo, in a surprising return to the smartphone market. Unlike most phones, the Duo sports two 5.6" screens, which fold out into an 8.3" display. There's no rear camera -- users fold the device backward and use the front-facing camera for forward-facing shots.
The Duo runs a standard version of Android with Alphabet's (NASDAQ: GOOG) (NASDAQ: GOOGL) Google Play Store installed, but it also comes with a suite of Microsoft's cloud-based Android apps, including Office, Outlook, and OneDrive.
The Duo is the smaller sibling of Microsoft's other new dual-screen device, the Neo, a Windows 10 device that offers two 9" screens that fold out into a 13" display. The Neo can also be converted into a laptop with a keyboard add-on that covers most of the second screen.