title: does app give different device token on re-installing again
body: <p>I remember, the device token never changes upon re-installing for iPhone.</p>
  
  <p>However these days (especially on iOS 9), I noticed that device token is changing if I re-install the app.</p>
  
  <p>Is this setting is done by Apple or I am missing anything?</p>
  
  <p>I have to know this because this is very important for me as I am sending push based for specific users to inform their updates. </p>
  
  <p>Also for no reason there are un-wanted many device tokens.</p>
  
  <p><strong><em>Note</em></strong></p>
  
  <p><em>I am calling below webservice in App Delegate</em></p>
  
  <pre><code>- (void)application:(UIApplication*)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)deviceToken
  {
      // sending it to online database for my record
  }
  </code></pre>