Photos

Apple introduced its Markup feature in iOS 9, allowing the user to annotate email attachments with a suite of tools including a pen to add marks and notes with, a magnifier to highlight items and a text box for adding printed text. iOS 10 brings this feature to the Photos app, allowing you to annotate your photos. Here's how to use it on your iPhone or iPad:

1. Choose a picture you want to edit in the Photos app.

2. Tap the edit button to the left of the Trash button.

The more and more we learn about iOS 10, the clearer it becomes that this iOS is not necessarily a complete overhaul of iOS as we know it, but rather a sort of “greatest hits” collection of those little improvements that Apple fans have been requesting for some time.

However, that doesn’t mean that iOS 10 isn’t going to change the way you use your device. That’s especially true of the many new shortcuts that it will gift users with that will soon become second nature tricks that separate device masters from casual users.

While the ability to take quality photos has clearly become one of the most important features to smartphone users, the ease with which those photos are shared with friends, uploaded to the web and distributed across other devices has become a crucial ingredient as well. Apple sought to improve this aspect when it introduced iCloud Photo Library with iOS 8. At the time, rumor had it that Apple would do away with its existing service, My Photo Stream. The fact that this never happened and My Photo Stream is still alive and well has been the source of much confusion ever since.

The new Nightshift mode stole the show with the recent release of iOS 9.3 and, after that, most attention focused on the new ability to password protect the Notes app. While those two were the main attraction, there were plenty of other smaller changes and additions including tweaks to News, Health and CarPlay.