title: Not able to install signed APK
body: <p>I have an app in play store, with   </p>
  
  <pre><code>versionCode 19
  versionName "19"
  </code></pre>
  
  <p>Now I build an APK with new vesrion code </p>
  
  <pre><code>versionCode 20
  versionName "20"
  </code></pre>
  
  <p>and signed with release key. </p>
  
  <p>I installed the live app from play store on my device and tried to install the signed APK over that, but it shows an error as below,</p>
  
  <p><code>“App not installed” 
  “The package appears to be corrupt”</code> </p>
  
  <p>Can anybody advice me on this how to solve.</p>
  
  <blockquote>
    <p>Note: Both apks are signed with same release key, There was change in
    Launcher Activity but now I updated that to Same Old name but still
    the error appears.</p>
  </blockquote>