Secure your mobile device with the world’s most trusted antivirus app. Avast Mobile Security for Android is a security app that secures mobile devices against unwanted phishing, malware, and spyware, as well as malicious viruses such as trojans. In addition, the embedded Anti<-Theft feature allows you to locate and track your lost or stolen device on a map with our web-based mobile tracking that uses GPS and other triangulation methods. Features What is Scan - The Scan button on the main app screen scans all apps installed on your device What is Boost RAM - Tap the Boost RAM tile on the main app screen to kill any apps running in the background of your device What is Clean Junk - When you tap the Clean junk tile on the main app screen, Avast Mobile Security analyzes your device and displays the amount of storage space that is being used by junk files.