It’s pretty simple to install Pokemon GO on a jailbroken iPhone or iOS device. You just need to install Appcake first. Here’s how:

1. First you google a tutorial on how to install appcake on your iOs device / iPhone
2. Then you search for Pokemon GO in appcake. It’s very easy and simple to install via Appcake
3. Then you’re done and can play Pokemon GO

As easy as that!