title: How the top apps can send multiple ios push notifications almost at same time?
body: <p>I was sending two ios push notifications simultaneously, one silent and one alert.</p>
  
  <p>Sometimes, one of the push notification is not received on the device.</p>
  
  <p>When I read about the troubleshooting Push notifications guide - <a href="https://developer.apple.com/library/ios/technotes/tn2265/_index.html#//apple_ref/doc/uid/DTS40010376-CH1-TNTAG23" rel="nofollow">https://developer.apple.com/library/ios/technotes/tn2265/_index.html#//apple_ref/doc/uid/DTS40010376-CH1-TNTAG23</a></p>
  
  <p>It says that - there is a quality of service queue, which holds only one notification per app per device.
  So, can't we send multiple notifications to a device almost at a same time?</p>
  
  <p>How Whatsapp does it? If there are ten people chatting with me, I get 10 notifications almost at same time.</p>
  
  <p>Can someone help clear my understanding?</p>