diff --git a/app/js/controllers.js b/app/js/controllers.js
index c3544a6c..e6663be6 100644
--- a/app/js/controllers.js
+++ b/app/js/controllers.js
@@ -171,6 +171,20 @@ angular.module('myApp.controllers', ['myApp.i18n'])
     $scope.sendCode = function () {
       $timeout.cancel(nextTimeout)
 
+      var fullPhone = ($scope.credentials.phone_country || '') + ($scope.credentials.phone_number || '');
+      var badPhone = !fullPhone.match(/^[\d\-+\s]+$/);
+      if (!badPhone) {
+        fullPhone = fullPhone.replace(/\D/g, '');
+        if (fullPhone.length < 7) {
+          badPhone = true;
+        }
+      }
+      if (badPhone) {
+        $scope.progress.enabled = false
+        $scope.error = {field: 'phone'}
+        return
+      }
+
       ErrorService.confirm({
         type: 'LOGIN_PHONE_CORRECT',
         country_code: $scope.credentials.phone_country,
diff --git a/app/partials/desktop/import_contact_modal.html b/app/partials/desktop/import_contact_modal.html
index f89e550e..fa18eacb 100644
--- a/app/partials/desktop/import_contact_modal.html
+++ b/app/partials/desktop/import_contact_modal.html
@@ -2,13 +2,16 @@
 
   <div class="md_simple_modal_body">
 
-    <form class="modal_simple_form" ng-submit="doImport()">
+    <form class="modal_simple_form" ng-submit="doImport()" name="importContactForm">
 
       <h4 my-i18n="contact_import_modal_title"></h4>
 
-      <div class="md-input-group" my-labeled-input>
-        <label class="md-input-label" my-i18n="contact_import_modal_phone"></label>
-        <input class="md-input" my-focused type="text" ng-model="importContact.phone" my-submit-on-enter />
+      <div class="md-input-group" my-labeled-input ng-class="{'md-input-error': importContactForm.phone.$invalid && importContactForm.phone.$touched}" my-labeled-input>
+        <label class="md-input-label" ng-switch="importContactForm.phone.$invalid && importContactForm.phone.$touched">
+          <span ng-switch-when="true" my-i18n="login_incorrect_number"></span>
+          <span ng-switch-default my-i18n="contact_import_modal_phone"></span>
+        </label>
+        <input class="md-input" my-focused type="tel" ng-model="importContact.phone" ng-pattern="/^[-\+\(\)\d]{7,32}$/" my-submit-on-enter name="phone" />
       </div>
 
       <div class="md-input-group" my-labeled-input>