Jailbreaking your phone is legal (as opposed to illegal), but I haven't seen anything saying that jailbreakability is a requirement for phones. If it were, it w

Jailbreaking your phone is legal (as opposed to illegal), but I haven't seen anything saying that jailbreakability is a requirement for phones. If it were, it wouldn't be difficult to apply that to things like game consoles and phones, which is a precedent no one (except consumers) have any interest in doing. The ruling simply says that you can't be arrested for jailbreaking phones; it doesn't require that a given phone be jailbreakable.