Many WordPress plugins can help you solve mobile usability issues. Some of the most popular plugins include: WPtouch: It offers responsive design, touch-screen optimization, and image optimization. AMP for WP: AMP pages load quickly on mobile devices, which can improve your website's SEO and user experience. Jetpack by WordPress.com: It offers a complete suite of responsive designs, image optimization, and lazy loading. WordPress Mobile Pack: This plugin adds several mobile-friendly features to your website, such as a mobile menu, touch-screen optimization, and font resizing. WP Mobile Menu: WP Mobile Menu is a plugin that adds a responsive mobile menu to your website. This will make it easier for mobile users to navigate your website.