Fake iPhone... I don't recall a pen calibration or motion setting tab ever in settings. I don't think you can jailbreak your device as it's not a genuine apple product.
Though that's true for the purposes of this thread, it's not totally correct--jailbreaks can be performed on a number of non-iOS devices (some Nokia phones, for instance0; it's just that the Apple jailbreaks have gotten the most public attention.