1. Download and install the OpenConnect from the Play Store .
2. Now open OpenConnect, click on + icon to add VPN profile.
3. Put VPN server address, you can find all servers address here : https://vpnbuilder.com/servers/
4. Now this page will show to you , tap on back button on your device .
5. Tap on VPN profile that you create to connect with it.
6. This alert will show to you, tap on always connect.
8. Put your VPN password .
9. Now you connected to our VPN services.
10. there is a trick for OpenConnect for faster connecting, Please go to VPN profiles list then click on setting.
11. In “Advance” section, tap on “Batch Mode” option.
12. Select “Never prompt for credentials” option, by this option anytime you click on VPN protocol it will connect fast and never ask for credentials.