x:Phase is a new features introduced in Windows 10, it PROVIDES the ability to prioritize the rendering of XAML controls WITHIN a data template. A common SCENARIO for this is when using a long list that has images and text, it would most likely make more sense to load the text FIRST and then the image second. Not only would this make the PAGE look better while scrolling but if a user scrolls quickly enough it could save having to render the images at all and improve the overall speed of the app.

x:Phase is a new features introduced in Windows 10, it provides the ability to prioritize the rendering of XAML controls within a data template. A common scenario for this is when using a long list that has images and text, it would most likely make more sense to load the text first and then the image second. Not only would this make the page look better while scrolling but if a user scrolls quickly enough it could save having to render the images at all and improve the overall speed of the app.