While driving, that is... on an iPhone running iOS 11.4.1. Complaint: it doesn't work. Spam calls come through as readily as if DND wasn't activated. I had one just yesterday while I was trying to listen to NPR on the car radio. Yes, I was driving, about 35 mph. When I stopped to block the spammer, of course I got the usual pop-up telling me that I would not receive notifications while driving, and I had to click the box that says "I'm not driving" before I could unlock the phone. WTF? Obviously it knew I had been driving, but it let the bleeping spam call through. Anyone else had this happen under iOS?