✓ Web Shield fixes — Does your Web Shield keep getting disabled? Now we know why! We'll help you fix this by explaining how to exclude our app from your phone's battery-saving features
✓ New App Lock search — Looking for an app to lock? Just tap the new search icon in App Lock to easily search through all your installed apps
✓ Better stability — Just the usual stability improvements to keep your app working like it should

Protect against viruses & other types of malware with Avast Mobile Security, the world’s most trusted free antivirus app for Android.

Protect your privacy by receiving alerts when spyware or adware-infected apps are downloaded onto your device. Secure your device against phishing attacks from emails and infected websites. Turn on the VPN to keep your online browsing private and safe, as well as to access your favorite paid streaming services when traveling abroad. Get alerts when your passwords have been compromised by hackers.

With more than 100 million installs, Avast Mobile Security & Antivirus provides much more than just antivirus protection.

Free features:

✔ Antivirus Engine
✔ Anti-Theft
✔ Hack Check
✔ Photo Vault
✔ File scanner
✔ Privacy Permissions
✔ RAM Boost
✔ Junk Cleaner
✔ Web Shield
✔ Wi-Fi Security
✔ App Insights
✔ Virus Cleaner
✔ Wi-Fi Speed Test

Premium features for advanced protection:

Camera Trap: Secretly capture photos and audio of the thief if your phone gets stolen.
Last Known Location: Check your device's last location before its battery died.
App Lock: Keep your sensitive content secure and private by locking any app with a PIN code, pattern, or fingerprint password. Only you’ll be able to access them.
Remove Ads: Eliminate ads from your Avast Mobile Security & Antivirus experience.
Avast Direct Support: Contact Avast directly from the app to receive quick responses to your inquiries.

Finally, Ultimate users can enjoy our VPN (Virtual Private Network) as well - Hide your online activities from hackers and your ISP by encrypting your connection. You can also change your location to access your favorite paid streaming services from anywhere.

Avast Mobile Security & Antivirus in detail

Antivirus Engine: Automatically scan for viruses and other kinds of malware, including spyware, Trojans, and more. Web, file, and app scanning provides complete mobile protection.
App Insights: Discover how much time you spend using each app on your device and take back control of your phone-life balance.
Junk Cleaner: Instantly clean out unnecessary data, junk files, system caches, gallery thumbnails, installation files, and residual files to give you more space.
Photo Vault: Secure your photos with a PIN code, pattern, or fingerprint password. After moving photos to the Vault, they are fully encrypted and only accessible to you.
Web Shield: Scan and block malware-infected links, as well as Trojans, adware, and spyware (for privacy and safe web browsing, e.g. Chrome).
Wi-Fi Security: Check the security of public Wi-Fi networks, browse safely, and make secure online payments from anywhere.
Hack Alerts: See which of your passwords have been leaked with a quick and simple scan, so you can update your login credentials before hackers infiltrate your accounts.

This app uses the Device Administrator permission. This permission allows you to remotely lock and wipe your device from my.avast.com.

This app uses the Accessibility permission to protect visually impaired and other users against phishing attacks and malicious websites.

See available downloads
A more recent upload may be available below!

This release comes in several variants (we currently have 2). Consult our handy FAQ to see which download is right for you.

6.40.2 BUNDLE 20 S
July 14, 2021
Android 5.0+
6.40.2 APK
August 3, 2021
Android 5.0+
All Releases


Uploaded:March 15, 2023 at 5:00AM UTC

File size:19.3 MB


Avast Antivirus & Security 6.56.1


Uploaded:February 25, 2023 at 6:17AM UTC

File size:20.92 MB


Avast Antivirus & Security 6.56.02


Uploaded:January 25, 2023 at 5:19PM UTC

File size:20.94 MB


Avast Antivirus & Security 6.55.2


Uploaded:December 14, 2022 at 10:53PM UTC

File size:21 MB


Avast Antivirus & Security 6.55.1


Uploaded:December 12, 2022 at 11:10PM UTC

File size:21 MB


Avast Antivirus & Security 6.54.0


Uploaded:November 25, 2022 at 6:06PM UTC

File size:21 MB


Avast Antivirus & Security 6.53.0


Uploaded:November 6, 2022 at 12:19AM UTC

File size:20.92 MB


Avast Antivirus & Security 6.52.2


Uploaded:October 4, 2022 at 1:01AM UTC

File size:20.73 MB


Avast Antivirus & Security 6.52.1


Uploaded:September 26, 2022 at 3:07PM UTC

File size:41.06 MB


Avast Antivirus & Security 6.52.0


Uploaded:September 16, 2022 at 7:03PM UTC

File size:20.77 MB