Most underrated feature of iPhone

Curious what iPhone users would say is the most underrated or underutilized / under appreciated feature or tool, with iPhone?

What’s something you find absolutely amazing? Something you couldn’t find on Android or what works better on iPhone in comparison?

Mine would be sending money in iMessage / wallet. I think this is so awesome and convenient and I love it. It’s one of the features / tools that keeps me on iPhone because it prevents the need for 3rd party apps like Venmo. I love that it’s secure (e2ee) and works so well! Apparently now you can use it via tapping iPhones together too? Love it!

Let’s hear your thoughts!