The Notes app may be the iPhone's most useful and commonly used app, and the ability to use it collaboratively only enhances that usefulness.

But worry not, iPhone users, because protecting your Notes app is pretty straightforward. This guide will show you how to password-protect notes on your iPhone so you can keep your personal ...

How to Use the Secret Notes App Built Into Your iPhone's Calculator Work out equations and draw graphs with this useful new tool.

Attention all iPhone users: if you need to send an important document but don't have a printer, a woman demonstrates how to using Notes.