Starting Android app development with a well-defined product objective and awareness of device variety sets the stage. Defining the MVP, choosing an architecture, and outlining key user flows early keeps the initial release focused and minimizes rework as the app evolves.

Once the foundation is set, focus moves to UI consistency, performance, and compatibility across OS versions and screen dimensions. Robust state management, careful networking, and trustworthy analytics/crash reporting simplify maintenance and iteration after launching on Google Play.