OnePlus
Delete an Alarm auf OnePlus
OxygenOS keeps every alarm you have ever set, even one-off wake-ups that already triggered, unless you delete it manually or set it to a single occurrence that gets cleared automatically. That is why the Clock app on a OnePlus phone can fill up with outdated entries after a shift change, a finished trip, or a routine you no longer follow.
A crowded alarm list is more than a cosmetic issue. It becomes easy to enable the wrong alarm by mistake, or to overlook the one entry that still matters for the next morning.
To remove an alarm for good, open Open the Clock app ➔ Tap and hold an alarm ➔ Tap on Delete. This removes the alarm along with its label, repeat schedule, and sound setting permanently.
If you only want to pause an alarm without losing its settings, use the toggle next to it instead of deleting it. That keeps the schedule and label intact for later, while deleting is the right move when you know you will never need that alarm again.