sortable column

I have added a custom field (below) but it is not sortable. How can I make it sortable? I want it arrange alpha order. – thx

add_action( ‘personal_options_update’, ‘yoursite_save_extra_user_profile_fields’ );
add_action( ‘edit_user_profile_update’, ‘yoursite_save_extra_user_profile_fields’ );
function yoursite_save_extra_user_profile_fields( $user_id ) {
$saved = false;
if ( current_user_can( ‘edit_user’, $user_id ) ) {
update_user_meta( $user_id, ‘phone’, $_POST[‘phone’] );
$saved = true;
}
return true;
}

https://ww.wp.xz.cn/plugins/codepress-admin-columns/