The module for Magento 2 based on a jQuery plugin for entering and validating international telephone numbers https://github.com/jackocnr/intl-tel-input/. The utilities script (build/js/utils.js) is a custom build of Google's libphonenumber.

Integration to Magento 2 a jQuery plugin for entering and validating international telephone numbers. It adds a flag dropdown to telephone fields, detects the user's country, displays a relevant placeholder and provides formatting/validation methods. At the current moment not all features implement for Magento 2., plugin provides such possibility.

The demo page of a jQuery plugin, not Magento module.

1. Go to Magento 2 root directory

2. Enter following commands to install module:

   composer require maxmage/international-telephone-input
   

3. Enter following commands to enable module:

   php bin/magento module:enable MaxMage_InternationalTelephoneInput
   php bin/magento setup:upgrade
   php bin/magento cache:clean
   

1. Enable the International Telephone Input module in Magento® Admin under Stores > Configuration > Customers > International Telephone Input.