OPPO SMS classification explains how to set it up.

Xiaobu has arranged the following classified display of mobile phone short messages for you:

In order to optimize the management of mobile phone information, the system models of ColorOS 6. 1 and above will push new versions of information one after another. In the new version of information, SMS can be divided into "message" and "notification" modules, which is convenient for distinguishing information.

Set path:

Info APP > top right corner > click settings > paging display of messages and notifications.

Tips: This function is intended to be suitable for ColorOS 6. 1 and above models. The upgrade rhythm of different models is different. You can check whether the mobile phone adapts to this function through the above path.

This answer applies to all OPPO models.