The note pad on OPPO mobile phone is called Notepad, which is a Notepad program on the desktop of mobile phone. When it is opened, it can be used to take notes. Some models of Notepad do not support the reminder function. If you need to take notes, you can choose a dedicated mobile phone notepad software:

You can install a dedicated Android APP for free on OPPO phones.

Post-it notes support the function of regular reminder. You can set the reminder notice of post-it notes, which will trigger a reminder message after it expires.

Notes will be automatically backed up to the cloud on post-it notes, and the notes deleted by mistake will not be lost, and can be retrieved at any time on the timeline.