Do you set your iPhone alarm before going to bed at night? Be aware it may not go off at the set time. If this has happened to you, you are not alone.

Apple is aware of issues where the iPhone Alarm will be set but doesn’t play at the designated time.

This is how you can fix the problem short term.  Go to the Face ID/Passcodes.  Scroll down to the “Attention Aware Features” turn off that feature.

This will enable the alarm to go off without an issue until Apple fixes the problem..