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Activating Avast Mobile Security

This article applies to the older Avast Mobile Security app, which is being replaced by the new Avast One. As part of this transition, Avast Mobile Security is being removed from the Google Play Store and the App Store and will soon no longer be available. All new installations on Android and iOS now install the new Avast One app.

For information about the new Avast One, refer to the following articles:

Avast Mobile Security is available as both a free and paid app. After you install the free version of the app, you may need to activate it. A subscription purchased via Google Play Store or the App Store activates automatically on the device you use to make the purchase. If you purchase your subscription through another Avast sales channel, such as the Avast Store, you need to manually activate the app using a valid activation code or your Avast Account.

If you purchased a subscription bundle such as Avast Mobile Ultimate or Avast Cleanup Premium Plus in the Avast Cleanup application, your Avast Mobile Security application will activate automatically.
This article is valid for activation of both Avast Mobile Security Premium and Avast Mobile Security Ultimate for iOS.

Enter activation code

To activate Avast Mobile Security using an activation code:

  1. Locate your activation code. This is included in your order confirmation email. For detailed instructions, refer to the following article: Locating your Avast activation code.
  2. Tap the Avast Mobile Security icon on the Home screen of your device. The app opens.
  3. Tap Account, then select the Subscription panel.
  4. Select Use an activation code.
  5. Type or paste your activation code (including hyphens) into the text box, then tap Continue.

Avast Mobile Security is now activated. If activation is unsuccessful, refer to the Still need help? section below.

Still need help?

If you experience any activation issues:

  1. Ensure you have correctly entered your activation code correctly, including hyphens.
  2. If activation using your activation code still doesn't work, try following the instructions to activate using your Avast Account.

If your issues persist, refer to the following articles:

If you are still unable to activate your application, contact Avast Support.

Restore via Google Play

This option only applies if you purchased your Avast Mobile Security subscription through Google Play Store.

If you want to start using your subscription on a new device, or if you reset your existing device, you can restore your Avast Mobile Security subscription via Google Play Store:

  1. Ensure you are signed in to Google Play Store with the same Google Account that you used to purchase your subscription. For instructions on how to verify this, refer to the following Google Play Help article: Google Play Help ▸ How to add & use accounts in the Google Play Store on your device.
  2. Tap the Avast Mobile Security icon on the Home screen of your device. The app opens.
  3. Tap Account, then select the Subscription panel.
  4. Select Restore from Google Play.

Avast Mobile Security is now activated. If activation is unsuccessful, refer to the Still need help? section below.

Still need help?

If you experience any activation issues, refer to the following articles:

If you are still unable to activate your application, contact Avast Support.

Enter activation code

To activate Avast Mobile Security using an activation code:

  1. Locate your activation code. This is included in your order confirmation email. For detailed instructions, refer to the following article: Locating your Avast activation code.
  2. Tap the Avast Mobile Security icon on the Home screen of your device. The app opens.
  3. Tap Settings (the gear icon), then select the Subscription panel.
  4. Select Enter activation code.
  5. Type or paste your activation code (including hyphens) into the text box, then tap OK.

Avast Mobile Security is now activated. If activation is unsuccessful, refer to the Still need help? section below.

Still need help?

If you experience any activation issues:

  1. Ensure you have correctly entered your activation code correctly, including hyphens.
  2. If activation using your activation code still doesn't work, try following the instructions to activate using your Avast Account.

If your issues persist, refer to the following articles:

If you are still unable to activate your application, contact Avast Support.

Restore via App Store

This option only applies if you purchased your Avast Mobile Security subscription through the App Store.

If you want to start using your subscription on a new device, or if you reset your existing device, you can restore your Avast Mobile Security subscription via the App Store:

  1. Ensure you are signed in to the App Store with the same Apple ID that you used to purchase your subscription. For instructions on how to verify this, refer to the following Apple Support article: Apple Support ▸ Sign in with your Apple ID.
  2. Tap the Avast Mobile Security icon on the Home screen of your device. The app opens.
  3. Tap Settings (the gear icon), then select the Subscription panel.
  4. Select Restore from App Store.

Avast Mobile Security is now activated. If activation is unsuccessful, refer to the Still need help? section below.

Still need help?

If you experience any activation issues, refer to the following articles:

If you are still unable to activate your application, contact Avast Support.

Further recommendations

To learn more about how to use Avast Mobile Security, refer to the following articles:

For instructions on how to transfer your subscription from one device to another, refer to the following article:

  • Avast Mobile Security
  • Avast Mobile Security Premium
  • Avast Mobile Security Ultimate
  • Android and iOS


Updated on: 02/04/2026

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