Oppo How to Allow Messages (Do Not Disturb)

When "Do Not Disturb" mode is activated, incoming messages are acoustically muted and visually blocked. However, the Oppo smartphone settings allow an exception where we can allow messages from everyone, only from contacts or only from marked contacts (favorites).

Note: It is also possible to mark a contact as VIP, in which case the selected contact will be automatically excluded from the "Do Not Disturb" mode.