The second step to meet the mobile accessibility needs of your audience is to apply the accessibility principles that are relevant for mobile devices. These principles are based on the Web Content Accessibility Guidelines (WCAG), which provide a set of standards and best practices for making web content accessible to people with different disabilities. To ensure mobile content is perceivable, operable, understandable, and robust, some key principles include using clear and contrasted colors, providing alternative text for images, supporting touch and voice input, using simple and concise language, following web standards and conventions, testing content on different screen sizes and orientations, and providing fallback options for unsupported features. Additionally, avoid flashing or moving elements that can cause seizures or distractions, use large and responsive buttons, avoid time limits and pop-ups, follow a logical and consistent layout, provide labels and instructions for forms and controls, use clear and consistent icons and symbols, and avoid jargon and abbreviations.