Deleting the APP voice call notification in the notification bar of the iOS phone (related to the phone model, iOS system version, and APP version) will result in voice call rejection or connection failure. Tapping [Dismiss] on the band will delete this notification (same as deleting it on the phone), and right-swiping will return to the main interface.
If you want to hide this message on the band and do not reject the APP voice call, please do not tap [Dismiss], but swipe right to exit this notification.