Can Alarms Go off While on Facetime?

It doesn't matter whether you're on a FaceTime call or a normal network call, it'll go off exactly as it's supposed to. Whether your phone is on silent or Do Not Disturb, your alarm will go off. The only time your alarm won't sound is when your iPhone is turned off.

Can the other person hear your alarm on FaceTime?

Yes. The alarm will always sound on the phone's speaker. It overrides the mute switch, do not disturb, and the presence of headphones. If you are on the phone with someone, they should not hear the alarm sound on their end.

Will my alarm go off during a FaceTime call?

Yes your alarm will still go off while on a FaceTime call. The only time your alarm will not go off is if you have your phone turned off.