title: Why does MDN suggest using initial-scale=0.86 and minimum-scale=0.86 in viewport tag to suppress horizontal scroll?
body: <p>I've been revisiting the viewport tag on MDN and in article <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Viewport_meta_tag#viewport_width_and_screen_width" rel="noreferrer">Viewport width and screen width</a>, they suggest:</p>
  <blockquote>
  <p>Suppress the <strong>small zoom applied by many smartphones</strong> by setting the initial scale and minimum-scale values to 0.86. The result is horizontal scroll is suppressed in any orientation and the user can zoom in if they want to.</p>
  </blockquote>
  <pre><code>&lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=0.86, maximum-scale=5.0, minimum-scale=0.86&quot;
  </code></pre>
  <p>The MDN page was last modified on Jul 27, 2021. I've always used <code>initial-scale:1</code> for my work and have never come across any mobile device which applies zoom to it.</p>
  <ol>
  <li>Are there really many smartphones that apply zoom? If yes, please give a few examples.</li>
  <li>Where does the number <code>0.86</code> come from? Any references?</li>
  </ol>