Background app refresh is necessary when using certain fitness tracking, GPS navigation and third party podcasting/music apps, and I just limit it to apps that need it.
I believe Apple is doing what it can within reason to protect users privacy - the only truly foolproof privacy solution is not to be connected to the internet.
I believe Apple is doing what it can within reason to protect users privacy - the only truly foolproof privacy solution is not to be connected to the internet.