title: Problem requesting location updates by network
body: <p>I've created a Service and grabs location data about the user so I can show my users nearby places.  I want this Service to track by network in addition to GPS for 2 reasons: 1) GPS may not be enabled. 2) GPS takes quite a bit of time to lock on with my test phone.</p>
  
  <p>When my Service executes the following line:</p>
  
  <pre><code>mNETEnabled = mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
  </code></pre>
  
  <p>I get the following error:</p>
  
  <pre><code>11-24 14:00:41.693: ERROR/LocationManagerService(51): isProviderEnabled got exception:
  11-24 14:00:41.693: ERROR/LocationManagerService(51): java.lang.IllegalArgumentException: provider=network
  11-24 14:00:41.693: ERROR/LocationManagerService(51):     at com.android.server.LocationManagerService._isProviderEnabledLocked(LocationManagerService.java:1385)
  11-24 14:00:41.693: ERROR/LocationManagerService(51):     at com.android.server.LocationManagerService.isProviderEnabled(LocationManagerService.java:1359)
  </code></pre>
  
  <p>Why is this?  Am I missing a permission from the Manifest?  I have ACCESS_COARSE_LOCATION in my manifest.</p>