Installation is super easy, simply add the dependencies to your build and add the phone-input attribute to your input.
# use npm
$ npm install angular-phone-input --save
Add angular-phone-input to your dependencies
// your app
angular
.module('yourApp', ['angular-phone-input'])
.controller('SampleController', function () {})
// template.html
<input ng-model="value" phone-number type="tel">