A VPN for Android is an app that encrypts data sent from and to your Android device. The data is routed through a remote VPN server over an encrypted tunnel. It helps maintain user privacy online.
VPN on Android also refers to Android’s built-in VPN functionality, which means devices running Android 4.0 and later can establish secure and private connections over the public network (internet). In other words, an Android that can run a VPN app.