I just upgraded from an iphone 6S to an 11. I keep the volume muted almost all the time; I don’t want apps, ads, videos, anything making noise except actual phone calls. On my new phone, whenever I place or receive a call, suddenly the sound turns on for everything else, and the call’s volume is tied to the other volume. These used to be independent settings, and I could adjust call volume without affecting the rest of the phone. How do I make the new phone do that? Without it, the iphone’s ability to multitask during a call is completely destroyed. Adjusting individual app volume settings is not an option as that does not affect popups like ads.