In the past few years, there have been rumors that Microsoft is developing the Surface Phone. However, there is very little conclusive evidence. Many speculations still remain at the patent level. However, according to the discovery of foreign media in the latest preview of Windows 10, Microsoft does Has not given up on mobile devices.
It is reported that in Windows 10 Insider Preview Microsoft introduced an API interface for mobile cellular networks. Since Windows 8, Windows has integrated support for baseband chips, but is limited to data connections and cannot be used to make calls. To achieve this function only through Windows Phone or Windows 10 Mobile platform.
However, the above situation will change in the RS5 internal version of Build 17650. Microsoft has added a brand new API for Windows 10. They can be used for dialing, blocking calls, supporting Bluetooth headsets, and hands-free functions, etc. There are also indications that Microsoft is also considering giving the Windows system a 3G or LTE video call feature.