This article explains how to find and use AirDrop settings on iOS devices running iOS 12 or iOS 11.
ios 11: add hotspot and airdrop in control center
AirDrop is easily one of the best-kept secrets on the iPhone and iPad. You can use it to wirelessly transfer photos and other documents between two Apple devices: iPhones, iPads, iPod touch devices, and Macs.
So why haven’t more people heard of it? AirDrop originated on the Mac and is somewhat more familiar to those with a Mac background. Apple hasn’t pushed it the way the company has pushed other features over the years, and it certainly doesn’t help that the toggle is hidden in iOS Control Center.
Apple’s Control Center is different from the old one, but it’s actually pretty cool once you get used to it. Some of the buttons are small windows that can be expanded, which is a clever way to add more settings to Control Center while still fitting them on one screen. Another way to look at it is that the new design hides some settings, and AirDrop is one of those hidden features.