Oppo
Delete an Alarm auf Oppo
Old alarms often stay in the Clock app long after the reason for setting them disappears. On Oppo phones running Coloros, every alarm remains stored until you remove it manually, even if the toggle next to it is switched off.
To delete a single alarm, open Clock ➔ Tap and hold an Alarm ➔ Tap on Delete. This removes the entry completely instead of just pausing it.
Switching the toggle off only disables the alarm for now. It stays in the list and can go off again if it gets switched back on by accident, for example while scrolling through the app. Deleting is the safer choice once you know you will not need that time slot again.
If several alarms need to go at the same time, check for a multiple selection option in the Clock app. It lets you mark more than one entry and remove them together instead of repeating the tap and hold step for each one.
Keep at least one alarm active if your daily routine depends on it. Review the remaining list right after deleting to make sure nothing important got removed along with the rest.