"Note: the app will be running in an environment where <i>there is no Internet</i>. Hence <i>push notification will not work</i> here."<p>Emphasis original.<p>The author did not say they have no <i>network</i> connection, they said they have no <i>Internet</i> connection. The two are not synonyms. This makes perfect sense. It is factually wrong to laugh at that.<p>Now, it is possible that shiplu.mokadd.im is using the terms synonymously, but the text of the question leads me to believe that it is entirely possible that a local network resource is being used over Wifi and that he understands this quite well.