WordPress Speed Up Service | WordPress Website Maintenance Packages Reply To: menu on iphone & ipad not working after upgrade to 4.9.2, by esmi This could be caused by your theme. What theme are you using? Where did you download it from? Have you tried: – deactivating all plugins to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s). – switching to the default theme to rule out any theme-specific problems. – resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems. – re-uploading all files & folders – except the wp-content folder and wp-config.php & root .htaccess files – from a fresh download of WordPress. Make sure that you delete the old copies of files & folder before uploading the new ones. Reply To: menu on iphone & ipad not working after upgrade to 4.9.2