How to set a birthday reminder for a calendar?

The method of setting birthday reminder in the calendar is as follows:

Tools/materials: iPhone 13, ios 15, local settings.

1, click the plus sign in the upper right corner.

In the calendar interface, click the plus sign in the upper right corner.

Step 2 set birthday information

In the new schedule interface, set the birthday information.

3. Click Add

When the settings are complete, click Add.