Note: New iOS version does not support PPTP.
On Home Screen, Open "Settings"
On Settings Screen, Open the "General":
In General, Scroll down at bottom and open "VPN":
In VPN, click on "Add VPN Configuration…":
Open "Type" and choose "PPTP" as option:
Complete the settings as bellow and when finished, click on "Done":
Note: To see your server IP address, login here with your username and password.
Click on "Save":
Connecting and disconnecting
To connect to the VPN, toggle the "Status" button, showing "Not Connected", If connected successfully, will show "Connected":
To disconnect VPN, tap on "Connected" button: