title: Using Frames or changing visibility
body: <p>I'm new to UWP (windows 10), working on an app for windows phone, I wanted to know what is the difference between:</p>
  
  <ol>
  <li>Using multiple frames and navigate from one to other.</li>
  <li>Using a single xaml with no frames but with multiple grids (or other patterns), and instead of navigate-  just change visibility so only the desired grid will be visible.</li>
  </ol>
  
  <p>which option is better? and why?</p>