title: Magento checkout page phone number mask
body: <p>I need to implement international number mask in magento 2.1 checkout page
  phone number field like the below image <a href="https://i.stack.imgur.com/rgumT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/rgumT.png" alt="enter image description here"></a></p>
  
  <p>so I am requesting that any one know how to implement this code in magento 2.1 checkout page</p>
  
  <p>Git hub URL for this script <a href="https://github.com/jackocnr/intl-tel-input" rel="nofollow noreferrer">https://github.com/jackocnr/intl-tel-input</a></p>