Extra custom field for wordpress user profile

add_action( 'show_user_profile', 'add_extra_social_links' );
add_action( 'edit_user_profile', 'add_extra_social_links' );

function add_extra_social_links( $user )
{
    ?>
        <h3>New User Profile Links</h3>

        <table class="form-table">
            <tr>
                <th><label for="business_sector">Business Sector</label></th>
                <td><input type="text" name="business_sector" value="<?php echo esc_attr(get_the_author_meta( 'business_sector', $user->ID )); ?>" class="regular-text" /></td>
            </tr>

            <tr>
                <th><label for="phone_number">Phone Number</label></th>
                <td><input type="text" name="phone_number" value="<?php echo esc_attr(get_the_author_meta( 'phone_number', $user->ID )); ?>" class="regular-text" /></td>
            </tr>
        </table>
    <?php
}

add_action( 'personal_options_update', 'save_extra_social_links' );
add_action( 'edit_user_profile_update', 'save_extra_social_links' );

function save_extra_social_links( $user_id )
{
    update_user_meta( $user_id,'business_sector', sanitize_text_field( $_POST['business_sector'] ) );
    update_user_meta( $user_id,'phone_number', sanitize_text_field( $_POST['phone_number'] ) );
}