Building an Android app starts with a definite product objective and awareness of device variety. Establishing the MVP, choosing an architecture, and outlining key user journeys early ensures the initial release stays focused and minimizes rework as the app evolves.

Once the foundation is set, focus moves to UI uniformity, speed, and compatibility across different OS versions and screen dimensions. Robust state management, disciplined networking, and trustworthy analytics/crash reporting simplify maintenance and iteration after release on Google Play.