Need to check something in another email message while composing a message in Mail on an iPhone? Many people don’t realize that you can swipe down on the top of the draft to dock it at the bottom of the screen, look something up in another message, and then expand the draft again by tapping it at the bottom of the screen.
Remove Text from Images with Apple’s Preview using Copied Color Blocks
Have you ever needed to remove some content from a screenshot or other illustration? There’s no need for a fancy graphics app—you can do it quickly in Preview with this little-known trick.