Before you begin to set up RealVPN IKEv2 connection on your Android device, you need to get your VPN account credentials from the RealVPN's User Settings.

1. Sign in with your account at https://realvpn.io

2. Open the dropdown Account menu and click Settings.

3. In the opened window select the required VPN server you want to connect to.

4. Then select the IKEv2 protocol from the list.

5. Click Generate to get the connection data.

Now proceed to set up the connection on your Android device.

1. From the Google Play Store install a strongSwan VPN Client.
2. Open the installed app and tap Add VPN Profile.
3. In the opened window enter the following data:
    
   • Server: paste the Domain name from the generated connection data
   • VPN Type: select IKEv2 EAP (Username/Password)
   • Username: paste Login from the generated connection data
   • Password: paste Password from the generated connection data
   • CA certificate: keep the checkbox enabled to Select automatically
   • Profile name: input any connection name, for example, RealVPN
   • Server identity: leave blank
    
4. When you finish, tap Save.

Now you have the RealVPN connection established.

Use the strongSwan VPN Client to enable\disable VPN connection.