title: Pixel tracking fired with javascript is not fired on mobile when browser is in background
body: <p>I'm trying to find a solution to fire a pixel from Safari browser on <strong>iPhone</strong> </p>
  
  <p>Here is my scenario:</p>
  
  <p>I have a Web Site (not an native app) that needs to fire a pixel to a third party 10 seconds after clicking submit button (currently I'm using JavaScript ).</p>
  
  <p>The problem is that when leaving  to another App, the JavaScript stops running, therefore the pixel is not fired.</p>
  
  <p>Is there any other way to trigger the pixel?</p>