Avast Secure Line VPN (Virtual private network) is a programming software that enables the users to use the public internet connection over their devices by encrypting the data and thus providing a safe and secure browsing experience. Through this programming, you can use any open internet connection over your Android and iOS devices. The internet connection speed is a little less than usual. You can know more about it by dialling the avast customer care phone number. The number is toll-free and is accessible 24 * 7.