to whom this may concern, I am an apple developer, fully registered and subscribed, and currently dont have one released on the appstore but has one on the testflight, and 2 internal testers are using it, but the main question is, as the iphone is registered on my account, if i sell my iphone, can i still develop and release apps on the testflight or appstore? is the registration one time only? do i need to have an active iphone?