Display members phone number as a tel: link on your directory profile page.

my-pmpro-link-phone-on-directory-profile.php

<?php   // do not copy this line.
/**
 * This recipe will make your phone a tel: link
 * 
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */


function my_pmpro_format_phone( $r, $phone ) {
	global $pmpro_pages;

	if ( is_page( $pmpro_pages['profile'] )) {
		$r = '<a href="tel:' . $phone . '">' . $phone . '</a>';
	}

	return $r;
}
add_filter( 'pmpro_format_phone', 'my_pmpro_format_phone', 10, 2 );