During the first day of Build, the software giant actually talked more about Android and iPhones than its very own mobile platform.
Microsoft offered demos of several breaking technologies, and unsurprisingly, smartphones were involved every time. The presentations, however, were mostly made on iPhones and on some occasions, on Android devices, while Windows phones were absolutely nowhere to be seen.
Furthermore, Microsoft has also announced that a mobile Azure app would launch on Android and iOS, again with no confirmation of a Windows phone version. Later, the company said that a UWP version is also planned, though the focus is clearly on Android and iOS.