public static function checkMobileBrowsers(Os $os, UserAgent $userAgent)
    {
        // Check for Opera Mini
        if (stripos($userAgent->getUserAgentString(), 'opera mini') !== false) {
            $os->setIsMobile(true);
        } // Set is mobile for Pocket IE
        elseif (stripos($userAgent->getUserAgentString(), 'mspie') !== false ||
            stripos($userAgent->getUserAgentString(), 'pocket') !== false) {
            $os->setIsMobile(true);
        }
    }