Mybb Mobile ((free)) →

Simplify the default MyBB editor for mobile.

.button, .pagination a, .forum_row a min-height: 44px; display: inline-flex; align-items: center; padding: 8px 16px; mybb mobile

Replace the top navigation bar with a mobile-friendly menu. Simplify the default MyBB editor for mobile

Make the Admin CP usable on mobile.

<button id="mobile-menu-btn">☰</button> <div id="mobile-nav"> <ul> <li><a href="index.php">Home</a></li> <li><a href="search.php">Search</a></li> <li><a href="memberlist.php">Members</a></li> </ul> </div> <script> document.getElementById('mobile-menu-btn').onclick = function() document.getElementById('mobile-nav').classList.toggle('open'); ; </script> Increase tap target sizes and improve touch interactions. .forum_row a min-height: 44px

"name": "MyBB Forum", "short_name": "Forum", "start_url": "/", "display": "standalone", "theme_color": "#007bff", "icons": [...]

Replace or modify the default MyBB theme with a fully responsive one.