When I use a VPN, I do it because I want my communications across the internet to be private. Apple iOS VPN is not private enough:
Two years on, Apple iOS VPNs still leak IP addresses • The Register
I always use a VPN when I suspect the internet connection or need total privacy – I am on leave as I write this and I am using my VPN on my iPad but not the Apple one.
Here is an article I recently wrote covering not only VPNs but other security considerations when travelling or out of your normal office/home office:
Clive Catton MSc (Cyber Security) – by-line and other articles
Photo © Clive Catton www.clivecatton.co.uk