If you don’t like the restriction imposed by Apple to prevent users from gaining root access on its devices, you can overcome it using blackra1n, a jailbreak tool. It supports all models of Apple devices which run on iOS 3 platform. Once you are done with the jailbreak, you can enjoy the freedom to choose your own cellphone service provider.
Een tool voor 'jailbreak' en om controle over uw Apple apparaten te krijgen