- Automatically deleting text-based and email-based 2FA codes
- Adaptive Transparency with AirPods Pro 2
- Live Voicemail. This one's huge. You can hear and read the VMs that people are leaving and use that context to decide whether to accept or ignore their call. Android's had this for a while; glad to see it in iOS.
There are others, but I can't think of them right now.