openvpnandroid.com/10-reasons-why-to-choose-norton-antivirus/
OpenVPN Connect is the “official” app from the OpenVPN Inc. and is intended to be more user-friendly VPN users with no technical expertise. It is, therefore, less featured than openvpn for android which is geared towards more advanced OpenVPN users.
Openvpn for Android is a free open-source application developed by Arne Schwarzbe, enables you to connect with any VPN service that is compatible with the OpenVPN protocol. If your device isn’t compatible the pre-configured VPN applications that are available in the Google Play Store, this is an excellent alternative. The setup is fairly simple. You only need to import your VPN profile files (the configuration files have an extension of.ovpn) which you can download from the website of your provider or by contact their live chat support team.
When you’ve imported a profile, tap one of the servers listed in order to connect to the server. Once connected it will ensure that all Internet traffic is routed through a secure tunnel, and directed to the server selected by the app. The Status tab lets you check your connection’s details and the status. A kill switch is enabled by default, and it will shut down your Internet connections when the VPN tunnel drops.
The app also comes with per-app VPN and an automatic feature that automatically starts an VPN connection when the app is in use and will continue to work even after your device is shut down or switches networks. However, the latter requires Android 7.0 or higher and could draw more power from your battery than usual.