How to fix mobile usability issues in WordPress

Most visits arrive on a phone. If buttons are tiny, text overflows, or a popup covers the page, people leave. Search tools flag many of the same problems as “mobile usability” issues.

Fix the usual WordPress causes

1. Use a responsive theme (or a maintained block theme) and test real devices, not only the Customizer preview.
2. Check Search Console mobile usability or PageSpeed mobile reports for specific URLs.
3. Increase tap targets and font size in the theme or CSS. Cramped menus and footer links fail on thumbs.
4. Avoid full-screen interstitials that block content on entry. Cookie notices should still leave the page usable.
5. Compress images and lazy-load carefully so mobile networks are not stuck downloading desktop hero art.
6. Disable conflicting plugins that inject fixed bars, chat widgets, or builders that break breakpoints.
7. Keep theme and plugins updated. Abandoned mobile-unfriendly code is also abandoned security code. Plugin security checks.

Security angle

Odd mobile redirects, unexpected popups, or injected scripts can be malware, not a CSS bug. If the HTML looks wrong in view-source, run through WordPress malware removal and the WordPress security checklist.

Related: how to optimize your WordPress site for mobile.