(A) Telecommunication companies likely already have this basic data stored as CDR (depending on whether you’re using a phone number to call or FaceTime), and regularly respond to requests from agencies with matches. Whether it’s on device or not is irrelevant in terms of what a policing agency can obtain.
(B) I don’t get the impression this is data Apple had per se, rather it was always part of your devices stored meta data, now revealed through UI. And does anyone have records going back further than the age of their device? Is it transferred on backup or will it follow your device through even new device set up. All the same see (A) above.
That’s true in brief stable places at times in history, but you can’t know: what is lawful today, will lawful tomorrow. Edmond Dontès makes the observation that patriotism and treason is a matter of dates.
More than this data is stored already by the telecoms companies, to echo @Apple-achian unless you’re involved in something criminal, you probably have nothing to worry about. Although, as an astute commenter pointed out some activities protected today might not be tomorrow.
(B) I don’t get the impression this is data Apple had per se, rather it was always part of your devices stored meta data, now revealed through UI. And does anyone have records going back further than the age of their device? Is it transferred on backup or will it follow your device through even new device set up. All the same see (A) above.
I'd personally trust Apple to manage my call history, even if it involves collaboration with the authorities. They have an excellent track record of consumer protection. And as my late red-blooded grandfather used to say, "you ain't got nothing to worry about if you ain't got nothing to hide".
That’s true in brief stable places at times in history, but you can’t know: what is lawful today, will lawful tomorrow. Edmond Dontès makes the observation that patriotism and treason is a matter of dates.
[…] they are concerned about the underlying data which made the feature possible in the first place, and which has been hiding away on our iPhones for years without most people ever realizing it.
Consider this hypothetical: If law enforcement has obtained access to a suspected criminal's call history via this UX, that might -- and that's a big might -- be useful to them, if they know precisely what they're looking for. That is of course rarely the case. […]
More than this data is stored already by the telecoms companies, to echo @Apple-achian unless you’re involved in something criminal, you probably have nothing to worry about. Although, as an astute commenter pointed out some activities protected today might not be tomorrow.