Microsoft Edge is considered as a universal app but lacks a full-screen icon. The F11 key that turns Internet Explorer in full-screen mode is also not available in Edge. So how can I turn the Edge into a full-screen mode when needed?
Turns out, it’s pretty easy. Just press Win + Shift + Enter, a key combination that turns virtually all Windows Store app into full-screen mode, and here you go.
See, it’s just simple like that.
When you move your cursor to the top of the screen, the window operations buttons pop up, including one that you can click to exit the full-screen mode.
/Update on June 14, 2017/
As of Windows 10 Falls Creators Update Build 16215, Microsoft formally adds a full-screen mode in Edge browser. Now you can press F11 to toggle Full Screen on and off or go to … menu and click the Full-Screen icon to enter the Full-Screen mode.