Data is processed on the user’s device where possible, for example, in creating predictive traffic routing which displays estimated travel time on a device’...

https://www.apple.com/jp/privacy/docs/Location_Services_White_Paper_Nov_2019.pdf

iPhone, with a key reason being that Android apps “can be downloaded from just about anywhere,” while everyday iPhone users can only download apps from one ...

https://www.apple.com/jp/privacy/docs/Building_a_Trusted_Ecosystem_for_Millions_of_Apps.pdf