Macworld VPNs are designed to keep your identity, location and data secure when you’re using the web, but are they something you should be using on your iPhone or iPad? We take a look at what VPNs offer and whether they are safe to use on your iPhone or iPad. Why use a VPN on an iPhoneVPN stands for Virtual Private Network, which is a pretty decent description of what these products aim to do. Basically, the software creates a secure connection across the internet through which all of your data travels to the server at the other end. This is achieved by encryption, which prevents hackers and m…