iPhone "number not available"

[MMTalker]

This might be it:

In iOS 16, why do notifications disappear?

I like the new feature in iOS 16 Photos where you can grab objects. Its’ fun. But why do notifications disappear? This has happened multiple times today. In iOS 15 notifications hung around until I went and looked at the item in question. But now they are all disappearing - not sure of the timing. But things like Words for Friends notifications and LINE notifications, etc., just seem to go away after a way. Thanks, doug