Earlier we told you how to configure custom DNS and Apple Safari in iOS. Continuing with our security focused tutorials, we are going to teach you how to set up a VPN in iOS manually.

If you purchased your iPhone within the past few years, it's likely to be unlocked, and free to use with any SIM. If your iPhone is older than that, it might be locked to a particular network/provider. But that doesn't mean you're stuck with that provider forever.