Here's how to install Avast Ultimate (Multi-Device)
Includes Premium Security, Cleanup Premium, SecureLine VPN, and AntiTrack as a bundle for up to 10 devices.
Install Avast Mobile Security Premium
1. Tap the button below to open the Avast Mobile Security page in Google Play Store.
2. Tap Install to download and install the app.
3. On your Home screen, tap the 
Avast Mobile Security icon to open the app, select Get started, then choose Already purchased? (if you switched to a free version with ads, go to ☰ Menu, select My subscription, then choose Already purchased?).
4. Select Use an activation code.
5. Type the activation code you received with the product into the text box, and tap Continue (if asked, enter your name, email, and postal code).
See detailed activation instructions
That's it! Don't forget to install the other apps.
