functions.php

<?php
add_filter( 'job_manager_field_editor_phone_args', 'my_custom_phone_args' );

function my_custom_phone_args( $args ){

//	Other available arguments, see GitHub for details
//	https://github.com/Bluefieldscom/intl-tel-input#options
//
//	$args['allowExtensions'] = 'false';
//	$args['autoFormat'] = 'true';
//	$args['autoHideDialCode'] = 'false';
//	$args['autoPlaceholder'] = 'true';
//	$args['ipinfoToken'] = '';
//	$args['nationalMode'] = 'true';

	$args['preferredCountries'] = array( 'iq' );
	$args['defaultCountry'] = 'auto';

	return $args;
}