Mobile interfaces need to communicate what is possible, what just happened, and how a person can recover from an error. Accessibility is part of that interaction design.
Make navigation understandable
Use clear labels and predictable destinations. Preserve context when moving between screens and avoid losing entered information without warning.
Design helpful forms
Give each field a meaningful label, explain errors near the relevant control, and retain valid values after a failed submission. Provide a visible loading state and prevent accidental repeated actions.
Check accessibility and layout
Test contrast, text enlargement, focus order, screen-reader labels, and touch target sizes. Review a narrow viewport and supported orientations. Do not rely on color alone to communicate status.
Include non-happy paths
Check empty, offline, permission-denied, and server-error states. A page that works only when everything succeeds is not a complete user flow.