title: How to properly update Google Play Services
body: <p>Is it possible to update my app after changing the Google Play service library in the <code>build.gradle</code>?</p>
  
  <p>I changed it from:<br/>
  <code>compile 'com.google.android.gms:play-services:8.3.0'</code>
  <br/>to<br/>
  <code>compile 'com.google.android.gms:play-services-ads:8.4.0'</code></p>
  
  <p>After changing the Play Service version, and installing on my phone, android studio gave me a warning saying that I can't update the existing application, and I must uninstall it. So, can I still release the new APK in the developer console, and will it cause issues?</p>