released iOS 17 for iPhones on Monday. It's Apple's biggest software update of the year, and is available for anyone with an iPhone from 2018 or later.

The company releases a big update to the iPhone's operating system every year alongside new iPhones, and you don't necessarily need to buy a new device to get access to the latest software.

This year's update has a lot of improvements to some of the most used apps, including the Phone app, Messages and Safari.

There are a lot of changes, but here are some of the highlights you need to know about: