Q: why my iphone doesn,t have in notes in calendars?

If you mean you don't know how to add notes to an iCal event on your iphone, scroll down when adding an event and the "Notes" field is at the bottom. To view notes you've placed on EXISTING events, click the event and the notes should be at the bottom. To ADD notes to an existing event, click on the event and click "Edit" at the top-right corner of your screen, and the notes field will be at the bottom of the page.