title: Android: App not installed
body: <p>I have a problem, I'm developing an app and when I run it via eclipse I can run it on my phone.</p>
  
  <p>But when I export it as a unsigned apk, I get following message at the end of the intallation: </p>
  
  <blockquote>
    <p>App not installed</p>
  </blockquote>
  
  <p>the problem is that I dont get any further informations about what is wrong.</p>
  
  <p>How can I find out where the problem is?</p>