If you have a toddler, who likes to play with your phone, chances are he/she might open Apps that contain important office documents. You cannot afford accidental deletion of those files, can you?
You can use an iPhone or iPad that's already running iOS 11 or later to automatically set up a new device. This process occupies both devices, so make sure that you choose a time when you won't need to use your current device for several minutes.
We all know with the launch of ARKit in IOS 11, Apple declared it is taking AR functionalities for its iPhones very seriously. With the ARKit you could use your iPhone to take simple measurements. But now with ARKit2, you can use your iPhone to take more accurate linear measurements.
Apple has recently released iOS 12 beta 5. In addition to some minor tweaks and feature improvements, there are some definite hints that in the near future we will have dual SIM iPhone.