If I had to come up with a list of the most useful things that my iPhone can do, high on that list would be the ability to remind me to do something in the future. I often find myself in a situation in which I realize that at, say, 4pm on Tuesday, I'm going to need to call someone or do something or check on something. So I simply tell my iPhone "Hey Siri, remind me at 4pm on Tuesday to do _____." When that time comes around, I most likely will have completely forgotten about the need to do that task, but then my iPhone sends me a notification, and I'm back on track.
Because this feature is so useful for me, it was devastating when I realized, soon after getting my new iPhone 16 Pro Mac, that I wasn't receiving those notifications anymore. I opened my Reminders app and saw that there was a notification that was missed (so it was in red), but the iPhone never beeped or vibrated or displayed an alert or otherwise gave me the notification that I needed. What was going on? I tried creating a new notification from within the Today view of the Reminders app, telling it to notify me at 4:25 (and many other times) to do something, but then 4:25 would come and go without me getting any notification at all.
I tried to do countless things to solve this problem but none of them fixed it. I even opened up my Settings app, then went to Notifications, and then looked for the Reminders app in the long list of apps to see if I could change some setting. But I didn't see Reminders in that list—which seemed odd to me. Had it been removed in iOS 17? After confirming with my podcast co-host, Brett Burney, that he was seeing the Reminders app under Notifications in his Settings app, I realized that my goal was to get Reminders to show up there on my iPhone.
The fix, it turned out, was to create a new reminder. But not from within the Today view, as I had been trying in the past. I went to the top level of the Reminders app. From there, I tapped the New Reminder button at the bottom left. Once I created a reminder, I saw something new: a request from the Reminders app to send me notifications. I tapped Allow. Finally, this solved my problem.
Moreover, it also meant that Reminders was, once again, showing up in my list. under Notifications in the Settings app:
I'm not exactly sure how this problem occurred in the first place. It may have had something to do with the fact that I set up this new iPhone from scratch while my prior iPhone was still running for a few days. I don't know. But if you ever find that you are not getting notification alerts from the Reminders app, and if you also find that your Reminders app is not listed under Notifications in the Settings app, the steps I outlined above might be just what you need.