Next-generation iPhones have been delivered to carriers for testing, carrier sources are said to be claiming. The devices have reportedly been shipped in "locked and sealed" boxes, to which very few people are being given access, according to The Guardian. As an extra layer of security, the test phones are said to be encased in dummy bodies. These sorts of bodies are alleged to be the cause of the iPhone 4's "death grip" reception problems, since too few people had been allowed to test the device in its final shape.
