title: HTTP_USER_AGENT is different than navigator.userAgent
body: <p>We use server side detection in PHP (simple) to detect if a device is mobile. This works fine, but sometimes, the server gets the HTTP_USER_AGENT string to be similar to mobile:</p>
  
  <blockquote>
    <p>mozilla 5.0 (iphone; cpu iphone os 7_1_1 like mac x) applewebkit 537.51.2 (khtml, gecko) version 7.0 mobile 11d201 safari 9537.53 </p>
  </blockquote>
  
  <p>The client-side detection (navigator.userAgent), shows a completely different string however:</p>
  
  <blockquote>
    <p>Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36</p>
  </blockquote>
  
  <p>Any idea what's going on?</p>