It is not difficult to setup PPTP VPN or L2TP VPN on iPhone/iPad. But if we want to use OpenVPN on an iPhone or iPad, is there a way we can setup OpenVPN on iPhone/iPad? The answer is Yes. Here we need an iPhone app called GuizmOVPN.
GuizmOVPN is an OpenVPN GUI for iPhone/iPad, designed to be easy to setup, configure and run. You can test GuizmOVPN for free without restriction during 7 days. After that evaluation period, the VPN will disconnect every 5 minutes, with a 5 minutes delay between 2 connections. The full version costs 4.99€, with no time limit or recurrent subscription.
The installation of GuizmOVPN requires a Jailbroken device. If your iPhone/iPad has not Jailbroken please use PPTP or L2TP VPN connection.