title: How to get the realy fixed Device-ID in swift?
body: <p>I use the below code since long time. I have thought it is unique</p>
  
  <p>But I have deleted my app and reinstalled it, I get new different Device-ID.</p>
  
  <pre><code>if let uuid = UIDevice.current.identifierForVendor?.uuidString {
    print(uuid)
  }
  </code></pre>
  
  <p>every new reinstall, I get a new ID.</p>
  
  <p>How do I get something which stays the same?</p>