title: Android 3G/2G control API?
body: <p>On Android settings, under Wireless controls->Mobile networks there is a setting "Use only 2G networks". </p>
  
  <p>In the Android SDK reference, under <code>android.telephony.TelephonyManager</code>, there doesn't seem to be anything to control the network type.</p>
  
  <p>What APIs does this setting actually call?</p>