title: React Native iOS show Downloading JavaScript bundle
body: <p>When I launch app on iPhone, I get this message </p>
  
  <blockquote>
    <p>Downloading JavaScript bundle...</p>
  </blockquote>
  
  <p>on top of screen. It take about 2 minutes. (see image below)</p>
  
  <p>How can i hide this message and improve performance of this step ?</p>
  
  <p><img src="https://i.stack.imgur.com/Qzgbg.png" alt="enter image description here"></p>