Transient screen

A transient screen is a pop-up screen such as a notification or dialog screen on a mobile phone.

A transient screen on mobile Wikipedia notifying the user about the new user interface for mobile editors.

It covers only part of the screen as well as dimming the remaining area. It helps to give the user a potentially high priority message, such as a new text message, voice mail or incoming phone call, either when the user gives the phone their attention, for example, by opening a flip phone or when running an application such as a game in the foreground.