hide related post on mobile device

add_action( 'jnews_single_post_begin' , 'test' );
function test(){
    if(defined('JNEWS_AUTOLOAD_POST') && wp_is_mobile() ){
        remove_action( 'jnews_single_post_after_content', array( \JNews\Single\SinglePost::getInstance(), 'related_post_hook' ), 40 );
    }
}