var app = angular.module('plunker', []);

app.controller('MainCtrl', function($scope) {
  $scope.value = '';
  
  $scope.submit = function(value) {
    $scope.value = value;
  }
});
<!DOCTYPE html>
<html ng-app="plunker">

  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <link rel="stylesheet" href="style.css" />
    <script data-require="angular.js@1.3.x" src="https://code.angularjs.org/1.3.6/angular.js" data-semver="1.3.6"></script>
    <script src="app.js"></script>
  </head>

  <body ng-controller="MainCtrl">
    <h2>Works in Android</h2>
    <form ng-submit="submit(foo); foo='';">
      <input type="number" ng-model="foo">
    </form>
    <h2>Doesn't work in Android</h2>
    <form ng-submit="submit(foo); foo='';">
      <input type="number" ng-model="foo">
    </form>
    <p>
      foo: {{ foo }}
    </p>
    <p>
      value: {{ value }}
    </p>
    
  </body>

</html>
/* Put your css in here */