How To Check If the Site Visitor Is Using a Mobile Device

Snippets by IsItWP

Are you looking for a way to check if the site visitor is using a mobile device? This snippet checks to see if the user is visiting using a mobile device and returns the result as true or false.


  1. Add this code to your theme’s functions.php file or in a site-specific plugin.
  2. // Add to functions.php
    // version proof, checks if the visitor is from a mobile device
    function muneeb_wp_is_mobile() {
        if ( function_exists( 'wp_is_mobile' ) )
            return wp_is_mobile();
        //code from wp_is_mobile function, wp_is_mobile() is located in wp-includes/vars.php version 3.4
        static $is_mobile;
        if ( isset($is_mobile) )
            return $is_mobile;
        if ( empty($_SERVER['HTTP_USER_AGENT']) ) {
            $is_mobile = false;
        } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Mobile') !== false // many mobile devices (all iPhone, iPad, etc.)
            || strpos($_SERVER['HTTP_USER_AGENT'], 'Android') !== false
            || strpos($_SERVER['HTTP_USER_AGENT'], 'Silk/') !== false
            || strpos($_SERVER['HTTP_USER_AGENT'], 'Kindle') !== false
            || strpos($_SERVER['HTTP_USER_AGENT'], 'BlackBerry') !== false
            || strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mini') !== false ) {
                $is_mobile = true;
        } else {
            $is_mobile = false;
        return $is_mobile;
  3. Then, use this code in your theme template to check if a visitor is using a mobile device.
  4. // Use anywhere
    if ( muneeb_wp_is_mobile() ){
     //do mobile stuff here

Note: If this is your first time adding code snippets in WordPress, then please refer to our guide on how to properly copy / paste code snippets in WordPress, so you don’t accidentally break your site.

If you liked this code snippet, please consider checking out our other articles on the site like: 9 Best SEO Tools to Grow Your Website Traffic, FAST!

Comments  Leave a Reply

  1. Great job, thanks

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