Iphone Alarm stopped working(thousands of reports over the last few months). This is just Apple acknowledging the problem:
Cause(from some user):
There is a feature called attention aware, and it doesn’t work
You have to turn it off (in 2 settings locations, frustratingly)
It thinks you are looking at the phone when the alarm goes off, so it silences it immediately
Another user
It’s the facial awareness garbage
If you disable that shit it will stop happening
My phone somehow thought my bare ceiling was my face, so it assumed I was already paying attention