Markup

Need to edit a PDF on the go? Apple recently added a few light duty editing tools directly to the Files app. In addition to annotation, iOS users can rotate PDF pages, insert and delete pages, and even scan new content. Once edited, the PDF can be saved and shared. Files may not replace the capabilities of Adobe Acrobat, but it can be helpful in a pinch.

Make sure your iPhone or iPad is running iOS 15 or later. The PDF to edit must be stored in your Files app, either locally on your device or on the iCloud Drive. Follow these steps to edit PDF files on iPhone:

iOS devices allow you to "markup" photos using Apple's 3 markup tools in the Photos app, under the "Edit" photo settings. You can also markup a photo directly in the Messages app before you send it off to one of your contacts. Here's how to markup or doodle on a photo in the Messages app using iOS 12 or later:

iOS 12 didn't deliver much on the side of features, but it did add the option to change the opacity and tip size of Apple's markup tools. In case you didn't know, your iPhone allows you to markup photos stored on your device. To do so you just need select a photo from the Photos app, then tap the Edit button, and finally tap the 3 dots in the bottom tool bar to bring up the Markup option.