add_filter( 'woocommerce_checkout_fields' , 'virtual_products_less_fields' );
/**
 * WooCommerce Remove Address Fields from checkout based on presence of virtual products in cart
 * @link https://www.skyverge.com/blog/checking-woocommerce-cart-contains-product-category/
 * @link https://docs.woothemes.com/document/tutorial-customising-checkout-fields-using-actions-and-filters/
 * @link https://businessbloomer.com/woocommerce-hide-checkout-billing-fields-if-virtual-product-cart/
 */
 
function virtual_products_less_fields( $fields ) {
     
    // set our flag to be true until we find a product that isn't virtual
    $virtual_products = true;
     
    // loop through our cart
    foreach( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
     // Check if there are non-virtual products and if so make it false
        if ( ! $cart_item['data']->is_virtual() ) $virtual_products = false; 
    }

    // only unset fields if virtual_products is true so we have no physical products in the cart
    if( $virtual_products===true) {
        unset($fields['billing']['billing_company']);
        unset($fields['billing']['billing_address_1']);
        unset($fields['billing']['billing_address_2']);
        unset($fields['billing']['billing_city']);
        unset($fields['billing']['billing_postcode']);
        unset($fields['billing']['billing_country']);
        unset($fields['billing']['billing_state']);
        unset($fields['billing']['billing_phone']);
        //Removes Additional Info title and Order Notes
        add_filter( 'woocommerce_enable_order_notes_field', '__return_false',9999 ); 
    }
     
    return $fields;
}