Comment by akerl_

Their rules cover their continued services. When you buy an iPhone, you are free to use whatever tools you’d like to modify / hack / break / enhance / etc the device.

The terms govern your interaction w/ Apple. So, for example, if you crack open the case and try to re-wire the board, the terms say your warranty no longer applies. If you modify the software, they can ban you from interacting with their servers. And if you start offering to sell modified iPhones to other people, they can come after you for damaging their business.

That’s what owning the phone means. You can do what you want with the phone you bought, but they aren’t required to support your efforts or allow you to use the services they’re actively running.