Oppo
Set Alarm Ring Duration auf Oppo
On Oppo phones running ColorOS, the alarm clock stops ringing automatically after a fixed amount of time. By default this duration is set to 5 minutes, which is often too short if you sleep deeply or leave your phone across the room.
The ring duration is a separate setting from snooze. It controls how long a single alarm cycle keeps sounding before it stops on its own, even if you never touch the screen. Snooze only comes into play once you actively tap it.
To change the setting, open the Clock app, then tap Menu ➔ Settings ➔ Ring duration. From there, choose one of the available options: 1 minute, 5 minutes, 10 minutes, 15 minutes, 20 minutes, or 30 minutes.
A longer duration is useful for heavy sleepers or shared bedrooms where you need a persistent reminder. A shorter duration makes sense if a loud alarm disturbs others quickly or if you tend to wake up right away.
This setting applies globally to all alarms set on the device, not just one specific alarm. If you need different alarms to behave differently, look for per-alarm options instead, since the ring duration setting affects every alarm equally.