Avast Mobile Security — Free antivirus for Android


Secure your mobile device with the world’s most trusted free antivirus app.


Over 100 million


4.5 stars
on Google play


100% Protection 
& Usability score


Protect your privacy

Keep intruders out of your business, both online and on your device.

Block spam and other unwanted calls

Mark 3

Secure your photos and apps using a PIN code, pattern, or fingerprint password

Hide your online activity and access geo-restricted content with VPN

Block all potential threats

Prevent viruses and other malware from infecting your Android device.

Perform regular scans to detect threats and vulnerabilities

Detect malicious apps before you install them

Protect against malware-infected links on the web, or sent via SMS messages

Verify the security of any Wi-Fi network before connecting

Every month we detect and block just under 2 million attack attempts on Android users.

With nearly 8 million malicious samples in our mobile threat detection database and 6,000 new unique samples being added every day, you are always protected.

The most common threats we detect and protect you from:

  • Trojan downloader — Downloads malicious programs onto your device without you knowing
  • Locker ransomware — Locks and prevents you from accessing your device
  • Adware — Floods your device’s screen with unwanted advertisements


  • Banking trojan — Steals your banking credentials to gain access to your account
  • Rooter — Acquires privileged access to take over and control your device
  • Fake apps — Malware that disguises itself as a real app to trick you into downloading it
  • Trojan clicker — Secretly clicks on webpages and eats up your data resources
  • Spyware — Infects your device to gather and transfer information about you
  • SMS Trojan — Uses your device to secretly send premium SMS messages

Secure your data remotely

Remote control lets you stop thieves from accessing your data and helps you recover your device if it becomes lost or stolen.

Track your device’s location

Lock your device or wipe all of your sensitive data

Mark 3

Secretly capture photos and audio of the thief

Mark 3

Automatically register your device as lost after SIM change

Enhance performance

Keep your Android device running as good as new.

Free up storage space by cleaning out junk

Speed up your device with RAM Boost

Extend battery life by adjusting power-consuming Android settings


Here’s what our users think

Google review 2
Google review 3
Google review 1

System requirements

In case you experience any problems, we are happy to assist you through our support page.

Mobile Supprt

Stay safe with the ultimate antivirus

protection for your mobile device.