Obviously, this feature depends heavily on the m-series motion co-processors of the 64 bit chip Apple shipped since iPhone 5s and iPad Air, why is it exclusive to only iPhone 6s? The only thing m9 brought is always-on Hey Siri. And for those who possess iPad Pros, does this feature work on those? I want to believe Apple is working on bringing Raise to Wake to older devices, otherwise it's gonna be a real pain in the, you know. [update] at beta four, I think we're done here.