Q: airdrop

What model Mac?

What model iOS device?

Airdrop between a Mac and iOS device requires:

In order to transfer files between a Mac and and an iPhone, iPad or iPod touch

• your iOS device needs to include a lightning connector
• your iOS device needs iOS 7 or later installed
• your Mac needs to be a 2012 or later model with OS X Yosemite installed
• Your Mac and iOS device both need bluetooth and Wi-Fi turned on. You do not have to be connected to a specific Wi-Fi network.

from:

Mac Basics: AirDrop lets you send files from your Mac to nearby Macs and iOS devices - Apple Support