Apple hardware enables AirDrop by default, but you can always double-check. First, turn on your Bluetooth and Wi-Fi connections. Then, on macOS, open Finder and look for AirDrop in the column on the left. You should see a discovery option at the bottom of the window. For increased privacy, set it to Contacts Only, and for broader sharing, set it to Everyone. On iOS and iPadOS, open Settings and choose General, then AirDrop, and, again, select either Contacts Only or Everyone.