I've substantially de-Googled but there's still the huge issue of mobile operating systems. If I choose iOS, I get a device that respects my privacy and gives

I've substantially de-Googled but there's still the huge issue of mobile operating systems. If I choose iOS, I get a device that respects my privacy and gives me some degree of control over what apps on my device can do (e.g. GPS permissions are much more useful) but I can't install what I like on my device and I can't globally block ads and trackers. If I choose Android with Google's apps preinstalled, I give up OS-level privacy and control but I can install what I like, including a device-wide, whitelist-based firewall, with which I can restrict ads and trackers. If I choose Android without Google's apps, I get a much greater amount of privacy and control over my device but I can't use common applications like my local public transit app.