As a UI/UX designer, your task is to redesign the user interface of a mobile app to improve accessibility for users with disabilities. Conduct an analysis of the current design to identify barriers and propose enhancements such as alternative text, voice navigation, and color contrast adjustments. Create wireframes and prototypes that illustrate the new design. Your solution should comply with the latest accessibility standards and provide a seamless user experience for all users. Include user testing feedback to validate your design choices.