What Does a VPN Do? What to Look for in a VPN Service Best Overall VPN: ExpressVPN Best Budget VPN: Tunnelbear Best VPN for Multiple Device Connection: IPVanish Best VPN for iPhone: ProtonVPN Best VPN for Android: Best VPN for Mac: StrongVPN What Does a VPN Do?Įach of your devices (your computer, smartphone, etc.) have their own unique IP address, which tells services who, what, and where you are.