Download OpenVPN Connect from the App Store
On your mobile device Download the config, select the location you want to use along with the Protocol and Port (use UDP & 443 if unsure).
你应该看见屏幕是这样的。点击 "Open in OpenVPN"。
Press the green "+" icon and you will be asked to give the app VPN permissions. Tap Allow and use your fingerprint to confirm with Touch ID if prompted.
Toggle the switch below "Disconnected" to start the connection. Tap Yes to "Allow OpenVPN to enable VPN" and you're done! You should see a screen like this if it connected successfully.