Htaccess;
RewriteEngine On
RewriteCond %{REQUEST_URI} !^/amp/ [NC]
RewriteCond %{HTTP_USER_AGENT} (android|blackberry|googlebot\-mobile|iemobile|iphone|ipod|\#opera\ mobile|palmos|webos) [NC]
RewriteRule ^(.*)$ /amp/$1 [R=302,L]JS kodu olarak da ekleyin footer'a;
<script type="text/javascript">
if (screen.width <= 1920) {
window.location = "https://www.site.com/amp/";
}
</script>