diff --git a/index.html b/index.html
index 5b7c2f1..6726c00 100644
--- a/index.html
+++ b/index.html
@@ -24,15 +24,16 @@
     <!-- End Google Analytics -->
   </head>
   <body>
-    <div id="MobileWarning" class="modal fade bg-warning">
-      <div class="modal-dialog">
+    <div id="MobileWarning" class="modal fade">
+      <div class="modal-dialog bg-warning">
         <div class="modal-content">
           <div class="modal-header">
             <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
             <h4 class="modal-title">Mobile version</h4>
           </div>
           <div class="modal-body">
-            <p>You seem to be using a mobile device. The experience with this website might be very unpleasant for you. This is why we made a mobile version of Particle Clicker.
+            <p>You seem to be using a mobile device. The experience with this website might be very unpleasant for you. This is why we made a mobile version of Particle Clicker.</p>
+            <p class="small">Hint: If you use the "Save to home screen" function of your browser, you can even play the game in full screen mode.</p>
           </div>
           <div class="modal-footer">
             <button type="button" class="btn btn-default" data-dismiss="modal">Understood, but I want to stay here!</button>
@@ -242,6 +243,6 @@
     <script src="js/achievements.js"></script>
     <script src="js/ui.js"></script>
     <script src="js/game.js"></script>
-    <script src="js/warnmobile.js></script>
+    <script src="js/warnmobile.js"></script>
   </body>
 </html>
diff --git a/js/warnmobile.js b/js/warnmobile.js
index 1480371..e24dea0 100644
--- a/js/warnmobile.js
+++ b/js/warnmobile.js
@@ -1,8 +1,7 @@
-$(function () {
+'use strict';
+
+(function() {
   if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
-    alert('lol');
     $('#MobileWarning').modal('show');
-  } else {
-    Console.log(navigator.userAgent);
   }
-});
+})();
