Thank you for reaching out. I can certainly understand your concern with the hard fall detection going off on you watch while attending the school concert and I would be happy to look into this further for you. I know this may be an odd question but in order to better assist, were you clapping when your hard fall detection went off on the watch?
Thank you for that information. I would recommend resetting your watch, as this would take your device back to factory defaults. Give this link a try for steps to properly reset your watch: https://www.samsung.com/us/support/answer/ANS00084702/
There is also no way for me to recreate the situation that caused the issue in the first place.
• During Physical Activity
• Only During Workouts
If it happens by mistake, you will have one minute to cancel the alert (sound, vibration, and pop-up) and avoid SOS messages from being sent.