The addition and deletion methods of OPPO mobile phone calendar schedule are as follows:

ColorOS3.0 and above: Go to Calendar APP > > Click the "+"sign in the upper right corner to add a new schedule.

Delete method of calendar schedule:

1. Select the "schedule" to be deleted, click "Delete Schedule" and confirm again to finish the deletion.

2. Open "Calendar", click on the upper right corner to enter the calendar setting page, select "Clear all overdue schedules", and confirm the deletion again.

Due to the different versions of OPPO mobile phone system, the operation method may be slightly different, please refer to the actual operation interface display of mobile phone.