Apple Support on X: "To check off a reminder from your Lock Screen in iOS 15 and iPadOS 15, just touch and hold it, then tap Mark as Completed. https://t.co/x7BySzUJNH" / X
How to fix reminders not working on iPhone and iPad
ios - Add a persistent message to iPhone main lock screen - Ask Different
How to Pin Reminders to Your iPhone's Lock Screen (So You Stop Forgetting Things) « Smartphones :: Gadget Hacks
iphone - How can I make reminders show on the lock screen on iOS 12.01? - Ask Different
How to Show Upcoming Reminders on iPhone Lock Screen in iOS 16