add_filter( 'woocommerce_checkout_fields', 'customize_checkout_fields' );

function customize_checkout_fields( $fields ) {

    if( isset($fields['billing']['billing_country']) ) {
        $fields['billing']['billing_country']['class'][] = 'hidden';
        $fields['billing']['billing_country']['required'] = false;
    }

    if( isset($fields['billing']['billing_city']) ) {
        $fields['billing']['billing_city']['class'][] = 'hidden';
        $fields['billing']['billing_city']['required'] = false;
    }

    if( isset($fields['billing']['billing_phone']) ) {
        $fields['billing']['billing_phone']['required'] = true;
    }

    return $fields;
}

add_action( 'wp_head', 'hide_checkout_fields_css' );
function hide_checkout_fields_css() {
    echo '<style>
        .woocommerce form .hidden { display:none !important; }
    </style>';
}<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="https://demo11.techzu.com.sg/sitemaps.xsl" ?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">	<url>
			<loc>https://demo11.techzu.com.sg/category/devices/</loc>
		<lastmod>2025-02-03T09:49:50+00:00</lastmod>
			</url>	<url>
			<loc>https://demo11.techzu.com.sg/category/electronics/</loc>
		<lastmod>2025-02-02T12:51:53+00:00</lastmod>
			</url>	<url>
			<loc>https://demo11.techzu.com.sg/category/gadgets/</loc>
		<lastmod>2025-02-03T09:53:58+00:00</lastmod>
			</url>	<url>
			<loc>https://demo11.techzu.com.sg/category/repair/</loc>
		<lastmod>2025-02-02T12:51:26+00:00</lastmod>
			</url>	<url>
			<loc>https://demo11.techzu.com.sg/category/tips/</loc>
		<lastmod>2025-02-02T12:51:57+00:00</lastmod>
			</url>	<url>
			<loc>https://demo11.techzu.com.sg/category/uncategorized/</loc>
			</url></urlset>