Cerberus helps you track your stolen phone when everything else fails

Cerberus is the most robust anti-theft app, with lots of features. It's your best chance to get your phone back. Once installed and setup on phone it can

-List call details, network and WiFi information.
-Record audio, take pictures and videos.
-wipe internal storage and SD card.
-hide the app from app drawer.
-Get the location history.
-send photo of the thief when wrong unlock code is entered (via email).
-send notification when sim is changed (via sms).

But to get into full Skynet mode. There's an advanced option which needs root access. With advanced protection enabled,

-it can install the app as a system application so it can't be uninstalled even with a factory reset.
-enabling GPS remotely.
-it will also work without internet connection (with sms commands
-it can send information when a new sim is inserted.

The app can send commands via sms or via web interface ( https://www.cerberusapp.com). It can also send automatic commands via presets in autotask (which is like tasker).

Watch as some guy used this app to lure a thief and managed to track him. And record activity like all his call details, camera and microphone and eventually get to him.

[Note : it won't survive if your phone has custom recovery, as thief can easily wipe system partition thereby uninstalling the app even if it's installed as system app]