No operating system is 100% perfect. Although iOS 18 looks great and grand, it still has its shortcomings that cause the device's system to crash. Again when testing iOS beta version. To make it easier for users, Apple now allows iPhone recovery to be done wirelessly with another iPhone without the need for a PC or Mac.
This feature was first introduced on Apple Watch and Apple TV with iOS 15.4 and iOS 17. Latest on iPhone 16 with iOS 18, if the device is in Recovery Mode – users can now use another iPhone or iPad with iOS 18/iPadOS 18 to perform recovery again without a computer.
Users just need to place the problematic iPhone 16 near another device for it to start downloading new image files and send them to your device. After it's done, you can go back to reset and restore the existing data. For now, according to 9to5Mac only the iPhone 16 can be restored with other iOS 18 devices. Not sure yet if other iPhones with the same operating system can also be restored this way.