http://openvpnandroid.com/secure-data-room-that-stimulates-fast-performance/
OpenVPN Connect is the “official” application of OpenVPN Inc. and is designed to be more user-friendly VPN users with minimal technical experience. This means that it is less equipped than the openvpn for android which is designed for more advanced OpenVPN users.
Openvpn for Android, a free open-source client designed by Arne Schwarzbe, allows you to connect with any VPN service that is compatible with the OpenVPN protocol. It’s an excellent choice in the event that your device isn’t compatible with pre-configured “off the shelf” VPN apps that are available on the Google Play Store. It’s fairly simple to set up. You just need to import your VPN profile files (the config files have an extension of.ovpn) which you can obtain from the website of your provider or by contact their live chat support team.
After you’ve added your profile, click on the server to connect. Once connected, your Internet traffic is directed via a secure channel to the server you’ve selected in the application. You can check your connection status and information in the Status tab. The kill switch is turned on by default. It will shut down your internet connection if the VPN tunnel is cut off.
The application also offers per-app VPN and an always-on feature that automatically starts a VPN connection whenever the app is being used and keeps it running even after your device is shut down or switches networks. This one however requires Android 7.0 or higher and could drain your battery more than usual.
