title: Gmail login: Google play service out of date
body: <p>when i tried to use:</p>
  
  <pre><code>mPlusClient = new PlusClient.Builder(this, this, this)
          .setVisibleActivities("http://schemas.google.com/AddActivity",
          "http://schemas.google.com/BuyActivity").build();
  </code></pre>
  
  <p>it triggers <code>onConnectionFailed</code> and the <code>ConnectionResult</code> is:</p>
  
  <pre><code>ConnectionResult{statusCode=SERVICE_VERSION_UPDATE_REQUIRED,
  resolution=null}
  </code></pre>
  
  <p>and as a whole it says:</p>
  
  <pre><code>03-02 12:12:50.969: W/GooglePlayServicesUtil(18431): Google Play services out of date.  Requires 3025100 but found 2012110
  </code></pre>
  
  <p>So, what exactly should I update on my device?</p>