https://appleinsider.com/articles/19/09/09/motion-coprocessor-replacement-in-2019-iphones-may-power-apple-tags
Motion coprocessor replacement in 2019 iPhones may power Apple Tags | AppleInsider
Apple is making major improvements to the coprocessor in the 2019 iPhones, a report claims, with the codenamed 'Rose' and 'R1' part included in the A13 chip...
motion coprocessorin 2019may powerapple tagsreplacement
https://www.macrumors.com/2013/09/10/iphone-5s-includes-new-m7-motion-coprocessor-for-health-and-fitness-tracking/
iPhone 5s Includes New 'M7' Motion Coprocessor for Health and Fitness Tracking - MacRumors
Apple's iPhone 5s is equipped with both an A7 processor and a new "M7" chip that is otherwise known as a "motion coprocessor." It...