some reason = GNSS: https://medium.com/@ilyakorogodin/where-is-a-navigation-chip-in-my-iphone-92ab55a61863 https://medium.com/@ilyakorogodin/where-is-a-navigati

some reason = GNSS: https://medium.com/@ilyakorogodin/where-is-a-navigation-chip-in-my-iphone-92ab55a61863 https://medium.com/@ilyakorogodin/where-is-a-navigation-chip... Article opens iPhones of several generations since iPhone 3G to discover how they do GNSS positioning.