recently I learned that if you connect headphones to your Android phone, the alarm will ring in the headphones. Which makes chances of you hearing it close to zero. Counterpoints:
— What if I’m in a public place and don’t want to disturb anybody, but still need to set an alarm (midday alarm)? Well, for that you have alarm volume knob (read about it here grumpy.website/post/0P0hb8EJ_)
— What if I’m actually wearing headphones and won’t hear an alarm from a phone speaker? Well, obviously, the purpose of the alarm is to be heard. It should make noises in all channels currently connected to it.
But the main design principle for alarm is to be reliable. So any opportunity for alarm not to be heard makes it less and less usable.