title: Google Analytics iOS Campaign Tracking and URL Builder
body: <p>We want to track installs with Google Analytics for our iOS app.
  What we already done:</p>
  
  <ul>
  <li>we have last <a href="https://developers.google.com/analytics/devguides/collection/ios/resources">iOS SDK</a> 3.10</li>
  <li>we enabled idfa collection like it says <a href="https://developers.google.com/analytics/devguides/collection/ios/v3/#idfa">here</a></li>
  </ul>
  
  <p><img src="https://i.stack.imgur.com/hAkaR.png" alt="idfa enabled"></p>
  
  <ul>
  <li>Build with IDFA available in AppStore ("ready for sale" in itunes connect)</li>
  <li>we have a tracking link that was generated using <a href="https://developers.google.com/analytics/devguides/collection/ios/v3/campaigns#url-builder">iOS Campaign Tracking URL Builder</a></li>
  </ul>
  
  <p><img src="https://i.stack.imgur.com/p6u5x.png" alt="enter image description here"></p>
  
  <p>Seems everything OK. But tracking link doesn't work.
  For user, that was redirected from this link, ga:campaign and ga:source are empty in GA database:</p>
  
  <p><img src="https://i.stack.imgur.com/ZeMVY.png" alt="enter image description here"></p>
  
  <p>And there is nothing in Google Analytics Acquisition, only direct traffic: </p>
  
  <p><img src="https://i.stack.imgur.com/z4L0P.png" alt="enter image description here"></p>
  
  <p>We are very confusing about the field Device ID Macro in URL Builder. Is it filled right? Any other ideas how to make the GA tracking work?</p>