Constraints & Contexts

Screen

Input and Mobility

The user is often the focus of interaction with their device, and the interface entails components of both hardware and software. User input allows for the users to manipulate a system, and device’s output allows the system to indicate the effects of the users’ manipulation. Mobile UI design constraints include limited attention and form factors, such as a mobile device’s screen size for a user’s hand(s). Mobile UI contexts signal cues from user activity, such as location and scheduling that can be shown from user interactions within a mobile application. Overall, mobile UI design’s goal is primarily for an understandable, user-friendly interface. The UI of mobile apps should: consider users’ limited attention, minimize keystrokes, and be task-oriented with a minimum set of functions. This functionality is supported by Mobile enterprise application platforms or Integrated development environments (IDEs).