I don't think we can trust Apple not to have NSA backdoors anymore. We all know about Microsoft's reputation, but Apple may be the slimiest of them all. Everything is closed source and encrypted on the network level, so instead, we have to judge from Apple's corporate and PR behaviour.
Apple care about their branding and profits above all, and not one iota about their customers, truth, or transparency.
Thus, I wouldn't be surprised if Apple had surveillance backdoors in secret, making a complete mockery of the whole 'privacy play' they maintain as a branding differentiator against Google.