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How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It

Jun 14, 2014 01:06 AM
Smartphone displaying a map application.

Back in August, Google introduced Android Device Manager. This new service allowed you to locate, lock, or wipe a lost or stolen Android device from either a companion app or a web interface. Effectively, this is the "kill switch" that legislators are clamoring for.

So, as owners of a phone that came with this service pre-installed, we should be free of worry when it comes to losing our devices, right?

Not so fast.

A would-be thief could easily circumvent Device Manager by simply enabling airplane mode or turning off your phone. This would prevent the Device Manager service from connecting to the internet to upload its location data. Even with lock screen security enabled, these features can still be accessed.

Follow these simple steps, though, and you can be sure that a potential Nexus thief would end up having to wait on your battery to die or for the police to arrive.

What You'll Need

Configure Location Settings

Before getting ahead of ourselves, we'll need to ensure that Android Device Manager has all the permissions that it needs to function properly.

First up, head to your phone's Settings and tap Location. In here, tap Mode at the top, then select High Accuracy (if it is not already selected).

Mobile settings menu displaying options for sound, display, storage, and localization.
Settings menu showing location services and related apps on a mobile device.
Settings screen showing location mode options on a mobile device.
Mobile settings menu displaying options for sound, display, storage, and localization.
Settings menu showing location services and related apps on a mobile device.
Settings screen showing location mode options on a mobile device.

Next, tap Google Location Reporting at the bottom of this menu, then hit Location Reporting on the next screen. See to it that this toggle is set to On.

Settings menu for location services on a mobile device.
Google location settings interface with options for location reporting and location history.
How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It
Settings menu for location services on a mobile device.
Google location settings interface with options for location reporting and location history.
How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It

Adjust Security Settings

If you haven't already set up lock screen security, now is the time to do so. Not only could a potential thief have direct access to all of the data on your device without this, but they could easily disable Android Device Manager altogether if you leave your phone unsecured in this way.

From your phone's Settings app again, tap Security. Hit the first entry, titled Screen Lock. In here, choose from Pattern, Pin, or Password to set up a screen lock. For this tutorial, I'll demonstrate using the PIN method.

How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It
Security settings menu on a mobile device.
Choose screen lock options on a mobile device.
How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It
Security settings menu on a mobile device.
Choose screen lock options on a mobile device.

You'll be asked to enter your new lock screen Pattern, Pin, or Password here. When you've done that, tap OK, and you'll have to enter it again once more. To finalize this setting, hit Confirm.

Choose your PIN screen with a numeric keypad for input.
PIN confirmation screen on a mobile device.
Choose your PIN screen with a numeric keypad for input.
PIN confirmation screen on a mobile device.

Next, scroll down and tap Device Administrators. The box next to Android Device Manager should already be ticked, but if not, tick it and hit Activate.

How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It
Android device administrator settings screen displaying options for Android Device Manager, Secure Settings, and Tablet.
Android Device Manager settings screen with options to erase all data, change unlock password, and lock the screen.
How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It
Android device administrator settings screen displaying options for Android Device Manager, Secure Settings, and Tablet.
Android Device Manager settings screen with options to erase all data, change unlock password, and lock the screen.

Install Advanced Power Menu

Now that you have lock screen security enabled and you've given Android Device Manager all of the permissions it needs, you should now make sure that a potential thief can't simply enable airplane mode or turn your phone off to circumvent your security measures.

Thanks to a recent addition to the Advanced Power Menu Xposed module, this last loophole can be closed. The app's developer, kennethso168, has added an option to disable these power menu entries on the lock screen.

From the Xposed Installer app, head into the Download section and search Advanced Power Menu. Tap the top result, then swipe over to the Versions tab and hit Download. You can also install the app directly from here.

Advanced power menu on an Android device showing settings and options.
How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It
App version history with change log details.
Advanced power menu on an Android device showing settings and options.
How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It
App version history with change log details.

This will launch the installer, where you should hit Install. When that's finished, you'll see a new notification. Tap the Activate and reboot button here.

Advanced Power Menu interface with options to change network connectivity and install an application.
Notification screen showing "Speed mode is not active" message on a smartphone.
Advanced Power Menu interface with options to change network connectivity and install an application.
Notification screen showing "Speed mode is not active" message on a smartphone.

Configure Advanced Power Menu

Once you're back up, open the newly-installed Advanced Power Menu app. Right up top are the options we're concerned with today. This interface provides other options for customizing your power menu, but I've covered these in Option #2 of this article if you'd like to check it out.

First up, tick the box next to Anti-theft helper. This will open up three more options. Tick Hide ATH description and Remove volume state toggle here. Fake power off doesn't seem to work, so leave it unticked.

Advanced Power Menu settings on a smartphone displaying options for device management.
Advanced Power Menu settings on an Android device.
Settings screen for advanced power menu options on an Android device.
Advanced Power Menu settings on a smartphone displaying options for device management.
Advanced Power Menu settings on an Android device.
Settings screen for advanced power menu options on an Android device.

Touring Your New Security Measures

At this point, your phone is now as secure as it can be—even in a thief's hands. A would-be thief can't unlock your phone due to the lock screen security you've added.

He (or she) can't even turn the phone off or put it in airplane mode to circumvent Android Device Manager. And speaking of Device manager, you now know that it'll function properly when called upon.

Smartphone screen displaying quick settings menu with options to power off and enable airplane mode.
How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It
Smartphone screen displaying quick settings menu with options to power off and enable airplane mode.
How to Prevent Thieves from Turning Off Your Stolen Nexus So You Can Locate It

To locate, lock, or even wipe your phone, you can simply visit this link from any web browser (that's a good one to have in your bookmarks). There's even an Android app that you can use to access this service from a different Android device, which is available on Google Play.

Android Device Manager app interface on Android device.

Doesn't that give you a little peace of mind? Which secure lock screen did you choose? Let us know in the comments section below.

The next big software update for iPhone is coming sometime in April and will include a Food section in Apple News+, an easy-to-miss new Ambient Music app, Priority Notifications thanks to Apple Intelligence, and updates to apps like Mail, Photos, Podcasts, and Safari. See what else is coming to your iPhone with the iOS 18.4 update.

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