title: Installing my projects apk fail on real device (android 10)
body: <p>I'm trying to install my projects apk file on my phone but it fails with an error - Cannot open file.</p>
  
  <ul>
  <li>Install apks from unknown source is <strong>turned on</strong>.</li>
  <li>The app I'm using (Total commander and Dropbox) <strong>has permission to install</strong> apps.</li>
  <li>Play protect is <strong>turned off</strong>.</li>
  </ul>
  
  <p>Apk installs just fine on the emulator.</p>
  
  <p>Phone:</p>
  
  <ul>
  <li>Samsung S10+ with Android 10</li>
  <li>Pixel 2xl with Android 10</li>
  </ul>
  
  <p>I've found one suggestion to clean Google Play cache but that didn't help.</p>
  
  <p>What could be causing this? Thank you.</p>
  
  <p><a href="https://i.stack.imgur.com/53QrQl.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/53QrQl.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/tcpfAl.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tcpfAl.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/42DxRl.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/42DxRl.jpg" alt="enter image description here"></a></p>