Tips for Using Notes on Your iPhone with iOS 9
The revamped Notes app on your iPhone gives you many options for taking care of all those things you need to do. You can create a checklist or add a shared item to a note.
Create a checklist
The new Checklist formatting feature in Notes allows you to add circular buttons in front of text and then tap those buttons to check off completed items on a checklist.
With a note open and the shortcut toolbar displayed, tap the Checklist button.
Enter text and press Return on the keyboard. A second checklist bullet appears.
When you’re done entering Checklist items, tap the Checklist button again to turn the feature off.
You can apply the Checklist formatting to existing text if you press on the text, tap Select or Select All, and then tap the Checklist button.
Add a shared item to a note
In iOS 9, you can share items to a note. For example, if you are displaying a map in Maps or a photo in Photos, you can tap the Share button and then choose Notes.
When you do, in the dialog that appears, you can either add text to the note and save it or select an existing note to add the item to.