Avast Anti-Theft for Android: FAQs

Frequently Asked Questions

Avast Anti-Theft is designed to protect your private mobile data and help you recover your phone in case of loss or theft. You can configure Avast Anti-Theft to automatically perform certain actions, for example, to sound an alarm if an untrusted SIM card is detected. You can install Avast Anti-Theft as a hidden application, so that the feature is not visible to potential thieves. Additionally, you can control any lost or stolen device remotely via SMS commands or your Avast Account which allows you to track the device and lock or erase private data.

System Requirements

Download and Installation

Features and Settings

General questions

What are the system requirements for Anti-Theft?

You can install and run Anti-Theft on any device capable of running operating systems Android 4.0.3 and later.

Anti-Theft supports both Android phones and tablets, and is compatible with dual SIM devices.

Anti-Theft is not supported (is not compatible, cannot be installed, and does not run) on Symbian, iOS, Microsoft Windows Phone/Mobile, Bada, WebOS, or any other operating system. It is not compatible with Nokia, iPhone, or iPad devices.

If you are using a custom ROM the app may not work as expected. Please report any feedback via our support pages.

How do I download and install Avast Anti-Theft?

The easiest way to install Avast Anti-Theft is from the Google Play Store:

  1. Open Play Store from the Apps screen on your Android device and search for Avast Anti-Theft with the keyword avast, or tap the button:
  2. Search for Avast Anti-Theft in the Google Play Store and tap Install.
  3. Grant the necessary permissions and open the application.
  4. Follow the Avast setup wizard steps to complete the configuration.

These steps may differ slightly depending on your device model, operating system version, and vendor customizations.

For more information please read the following article:

How do I uninstall Avast Anti-Theft?

Before uninstalling Anti-Theft, ensure that you have deactivated the Device Administrators permission granted for the app in your Android Settings. Go to Settings → Security → Device Administrators and untick Avast Anti-Theft. Otherwise, you will not be able to complete the uninstallation process.

  1. From the main screen open your device Settings.
  2. Select Apps, then Avast Anti-Theft.
  3. Select Uninstall and then tap OK to confirm.

These steps may differ slightly depending on your device model, operating system version, and vendor customizations.

  1. Open the Google Play Store on your device and search for Avast Anti-Theft.
  2. Tap Avast Anti-Theft.
  3. Tap Uninstall.
  4. Tap OK to confirm the uninstallation process.

For more information about uninstallation please read the following article:

What should I do if the uninstallation of Anti-Theft does not work?

If you are unable to uninstall Anti-Theft, ensure that the app is no longer marked as Device administrator in your Android Settings. To disable this permission, follow these steps:

Then you can continue the uninstallation process.

  1. From the main screen open your device Settings.
  2. Select the Security option.
  3. Select the Device administrators option.
  4. Uncheck Anti-Theft on the applications list.

What is Cloud storage?

When you mark your device as LOST, Anti-Theft automatically takes a photo of the possible thief and records an audio file to help you locate your device. If you select Google Drive in the Cloud storage section, the photo and recorded audio file are sent to your Google Drive. By default these files are sent only to your Avast Account. Please note that the option to send files to Google Drive can also be enabled in Avast Account. However, this option only applies to older versions of Anti-Theft which do not include the Cloud storage feature within the app. To set up the connection to Google Drive in Anti-Theft 4, go to Settings → Cloud storage.

What is the Use SMS to report status feature?

When the Use SMS to report status feature is enabled, Anti-Theft is able to send a confirmation message if a command is sent successfully. It also allows Anti-Theft to send the location information to a Friend's number when you use the LOCATE command. Enable this option in Settings → Use SMS to report status.

What is Stealth mode?

While in Stealth mode, Anti-Theft is hidden from the Android App Launcher and cannot be found or launched in the same way as other apps. This feature is useful if your device is lost or stolen. If the app cannot be detected by a potential thief, there is a much greater chance that the device will remain available for you to trace or control remotely. There are two ways to open the app while Stealth mode is enabled:

  • Open the app by dialing your Avast PIN and "calling" it as you would a phone number. This method works only for devices with SIM cards.
  • Open another Avast app installed on your device and go to the More by Avast section. Then tap the Anti-Theft icon to open it. This method is currently available in Avast Mobile Security, Battery Saver, Cleanup, and Wi-Fi Finder.

Stealth mode can be enabled manually in Settings → Stealth mode.

What is PIN security?

PIN security allows you to use additional protection by marking your device as lost if your Avast PIN is inserted three times incorrectly. PIN security can be enabled manually in Settings → PIN security.

What is SIM security?

If you activate SIM security, the device locks automatically when it detects a SIM card change. This is especially useful if a potential thief attempts to insert another SIM card into your device. SIM security can be enabled manually in Settings → SIM security.

What is the Show message on lock screen section?

In this section you can prepare a message (for example, a warning or contact data) to appear on the lock screen if the device is lost or stolen. Go to Settings → Show message on lock screen.

What is the Connection to Avast Account section?

During the activation process, Anti-Theft asks you to log in to your Avast Account to set up Web Control which allows you to control your device via the Avast Account website. If you skipped this option during the configuration process or want to change the account, go to Settings → Connection to Avast Account and log in.

What is Friend's number?

Friend's number is a feature that helps locate your lost or stolen device. When you configure Friend's number and later send the LOCATE command, Anti-Theft sends the updated location data to your Avast Account and to the phone number you entered during configuration.

What is the Change PIN section?

Here you can change the PIN code that you set during the activation process. To change it you need your current PIN. Go to Settings → Change PIN.

What is the SMS Remote Control feature?

This feature contains the SMS commands that allow you to remotely control your device. You can send the command directly from your phone, you just need to know a target phone number and its associated PIN. Go to Settings → SMS Remote Control.

What is Command history?

In this section, you can review the history of commands sent from the device. Go to Settings → Command history.

What is the In case of theft section?

In this section you can define the behavior of the app in case of theft. You can specify if you want to:

  • Lock device - the device locks.
  • Sound siren - siren activates automatically.
  • Restrict device settings change - nobody can access the device's Settings without a valid PIN.

These settings are applied only if you mark your device as lost. You can mark your device as lost via SMS commands or your Avast Account. All options are enabled by default to provide maximum protection in case of loss or theft. If you want to disable any of the settings, go to Settings → In case of theft.

How do I activate Anti-Theft?

When you run Anti-Theft for the first time, the app asks you to begin activation which includes SMS and Web control configuration and granting certain permissions. This activation ensures the full functionality of the app.

For instruction about activation please read the following article:

How do I remotely control my lost or stolen device with Anti-Theft?

You can remotely control your device by using:

For detailed instructions about controlling your device please read the following article:

What does Anti-Theft do if the SIM card is changed?

If the PIN security feature is enabled in Anti-Theft, the device locks automatically when the new SIM card is inserted. You can unlock your device and mark the SIM card as safe by typing your Avast PIN code. This additional protection layer prevents possible thieves from accessing your device. PIN security is disabled by default. It may be enabled in Settings → PIN security.

Why does Avast Anti-Theft need so many permissions?

Data and programming interfaces in Android are protected by permissions. Avast needs permission to implement the functionality of Avast's tools and features. The permissions required by Anti-Theft are the minimum necessary to implement the full functionality of the app. If Avast removed these permissions, the app could not work as it does. Avast takes your privacy very seriously. We do NOT use the permissions to transmit private data to our servers or to cause unwanted costs to your phone bill. Avast does NOT give any of your data to third parties.

What happened to root support?

We have discontinued root support in the latest release of Anti-Theft. We have decided to focus on the app's most commonly used features and to cancel others for smoother, increased functionality and ease of use.

Can I rename Anti-Theft or make it invisible to thieves in another way?

The App Disguiser feature is no longer available in Anti-Theft. There is no possibility to change the app name. However, the app can be hidden from the Android App Launcher with the Stealth Mode feature. The Stealth mode feature can be enabled manually in Settings → Stealth mode.

Does the new version of Anti-Theft include the Theftie feature?

Yes, Anti-Theft automatically takes a photo of the possible thief when you mark your device as lost. Additionally, the app records a 1-minute audio file to help you identify the intruder. You can review the photo and audio file in your Avast Account. Open the Avast Account website, log in to your account and go to Info → Notifications. If you previously connected your account with Google Drive, the files will also be sent there.

What is the Avast PIN used for in Anti-Theft?

The Avast PIN is used to authorize access to the Anti-Theft user interface. Because Anti-Theft is invisible in Stealth mode, it cannot be accessed in the same way as other apps. Instead, open the user interface by calling the Avast PIN as if it were a phone number. The entry is immediately removed from the call log so that your Avast PIN cannot be discovered. The call is not charged to you.

If you are not able to dial, or if your device does not offer a dialing option, you can access Anti-Theft via your Avast Account if your device is connected to the account.

Can I restore a forgotten Avast PIN?

For security reasons Anti-Theft does not send your Avast PIN to our servers, and there is no master key. However, there are two possible ways to restore a PIN - via Google Account and Avast Account.

Change your PIN via Google Account:

  1. Tap Reset PIN when you are prompted to type your current PIN.
  2. You are redirected to the Google Account login page. Tap Next to confirm your e-mail address.
  3. Type your password for your Google Account and tap Sign in.
  4. Anti-Theft asks for online access. Tap Enable.
  5. Type your new PIN and retype it to confirm.
  6. Type PIN again to open the app.

Change your PIN via Avast Account:

  1. Log in to your Avast Account connected with your device.
  2. Select your device.
  3. Go to Settings → Anti-Theft.
  4. Type your PIN and retype it to confirm.
  5. Click Save to confirm changes.

Why can my Avast PIN only consist of digits?

Because Avast Anti-Theft is invisible in Stealth mode, it cannot be accessed the same way as other applications. Instead, open the user interface by calling the Avast PIN as if it were a phone number. Since your phone dialer only accepts numbers, your Avast PIN must also use only numbers.

How do I change the language in Anti-Theft?

There is no option to change the language directly in Anti-Theft settings. The default language of the app is based on the system language. To change the system language, go to Android Settings and select your preferred language in the Language and keyboard/input tab. The name of this section may differ slightly depending on your device model and operating system version. Changing the language applies to the entire system, including other apps installed on your device.

How can I give feedback about the app?

There are many ways you can support and help improve Avast mobile products.

If you want to share your general experience about the app or recommend it:

  • Write a review on Facebook or Twitter.
  • Post reviews in Android or iOS related forums.

If you have a technical issue with Avast Anti-Theft or an idea on how to improve it:

  • Send feedback from the app. Access the feedback section in Settings → Contact support.
  • Report feedback via our support pages.

What other Avast apps should I be using?

Avast has created the following range of apps to improve the performance of your mobile device and protect you from hackers and thieves:

  • Avast Mobile Security: Secure your phone and tablet with our free Mobile Security app which features both antivirus and Wi-Fi vulnerability protection.
  • Avast Cleanup: Improve the performance and efficiency of your device with our Cleanup app, which quickly analyzes the storage space on your device and clears all unnecessary, space-wasting data.
  • Avast Wi-Fi Finder: Connect to secure public Wi-Fi networks quickly and easily wherever you go with Wi-Fi Finder.
  • Avast Passwords: Keep all of your passwords protected and easily sign into your online accounts using one main password. You can synchronize this app across multiple devices.
  • Avast SecureLine VPN: Prevent hackers from accessing and stealing your data when you are connected to public or open Wi-Fi networks, secure your personal Wi-Fi networks, and protect your privacy using the SecureLine private encryption VPN.
  • Avast Battery Saver: Preserve battery life on one charge and identify and stop applications that drain the most energy from your mobile device.
  • Avast Anti-Theft
  • Android 4.0.3 and later

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