Revert "Revert "use new TelephonyManager API preferred_network_type""

This reverts commit 6a5b2fcc36fcb6f8f5a6b8522d846473de1d4eba.

Reason for revert:  Breaking aosp-master builds.

Change-Id: Ifeaf9e683cbc25fb6c596873f70070f977792e28
1 file changed