Oppo
Allow Repeated Calls in Do Not Disturb auf Oppo
Do Not Disturb on ColorOS mutes calls, notifications and alerts based on rules you set, whether on a schedule or turned on manually. One built-in exception exists for repeated calls: if the same number calls again within three minutes, the phone can ring through even while Do Not Disturb stays active. This exception exists to catch urgent situations, since spam or accidental double-dials rarely repeat right away.
By default, ColorOS keeps this exception switched off. Every call gets silenced the same way, no matter how often the same number tries to reach you. That becomes a problem when someone genuinely needs to reach you, for example a family member during an emergency, but the setting has never been enabled.
To fix it, open Settings ➔ Sound & vibration ➔ Do Not Disturb ➔ Ring for repeated calls and turn the toggle on. Once active, a second call from the same number arriving within three minutes bypasses the silence and rings normally. The first call still stays muted; only the follow-up call triggers the ring.
If you only care about one specific contact, adding that person to your allowed contacts or favorites is a better fix, since that lets every call from them through regardless of repetition. Turning off Do Not Disturb entirely removes all filtering, which is rarely necessary just to solve a single-contact problem.