Create and manage notes.

To create a note, tap New. If you’re already in a note, just tap  to start a new one. Tap Done when finished. The first line of your note is the title displayed in the list of notes. Tap a title to open that note, and tap anywhere in the note to edit or add to it. Tap  to share a note. Tap  to delete a note, or from the list of notes, swipe left across the note title and tap Delete.

by via Apple - Support - Most Recent - iPhone