title: Android Google Maps V2 authentication error
body: <p>I get this message in logCat when I attempt to load a supportMapFragment: </p>
  
  <pre><code>Failed to load map. Error contacting Google servers. This is probably an authentication     issue (but could be due to network errors). 
  </code></pre>
  
  <p>I believe my key is valid because it works on one phone (galaxy s), but does not work for an older phone (optimus v) and newer phone (galaxy s3). I have all necessary permissions in the manifest and my network connection is just fine, so not sure why it would work on one phone by not another. Any ideas?</p>