There are still many users using internet connections confused Lumia through vpn, bridge in because still use IKEv2 VPN types that require a formal certificate needs to be installed on your phone to get the IKEv2 vpn connections.
And eventually Windows phone 8.1 may develop this app by adding the type of VPN, that is L2tp with IPsec. So this app is easier to use.
From the application that is in the Windows store, there are several applications of vpn. One of these applications which support VPN, OneClickVPN L2tp with IPsec type. ... This is the one application that is immediately used to activating VPN.
Application of VPNoneClick
gives free access to the first day, then please make a transaction
a VPN with a wide selection of appropriate capabilities and needs. For
transactions, can be done via paypal and Windows accounts through Lumia.
For example for setting that is up, anything that needs to be done to turn the VPN can be seen in the pictures. Because, the ease of this application provides several access login automatically appear on this application after you open it. Such as: Username, password, pre-shared key, expire date and the real ip in use. Copy everything that important for login, and pasting on the appropriate columns for the function.
Below is how to change the server that will be in use, you can do like the screenshot below. It is in the doing, usually because it's too congested internet traffic that makes you seem to weaken and slow.
If it's already in the can, replace the server name or ip address.