
Apple's AirDrop file-sharing feature debuted with the release of OS X Lion and allowed users to transfer files from one Mac to another without using email or an external storage device. The feature made its way to iOS devices with the release of iOS 7, and offered a simple way for users to share files like photos between iOS devices. Now, with the release OS X Yosemite, users can use AirDrop to transfer files between the Mac and an iOS device for the first time.
This video shows you how it works:
On the Mac, a number of apps like Safari, Preview, Pages, and Contacts support the Share feature. Third-party Mac apps like Deliveries, Ember, and Notability also feature Share support, allowing content to be transferred via AirDrop. On iOS, most of Apple's stock apps including Photos, Safari, Notes, and Maps feature Share support. Third-party apps including Camera+, Evernote, and eBay also support the feature.
Before you Start
You will need iOS 7 or later and OS X Yosemite in order to use AirDrop to transfer files between a Mac and an iOS device. Using AirDrop to move files between iOS and Mac is supported by all Mac models released in 2012 and later running OS X Yosemite. You can confirm that your Mac is compatible with AirDrop by clicking the Finder icon in the Dock and clicking the "Go" icon in the Menu Bar. If AirDrop is not listed as an option, then your Mac is not compatible with the feature. AirDrop between a Mac and an iOS device also requires an iPhone 5 or later, iPad 4 or later, iPad mini, or fifth-generation iPod touch.

Keep in mind that it is not required for both devices to log into the same iCloud account to use AirDrop, but doing so offers the benefit of transferring files through AirDrop automatically without the need to approve each transfer. Files transferred between devices logged into different iCloud accounts will need permission to accept file transfers. Both iOS devices and Macs must be powered on and not locked in order to make AirDrop file transfers.
Steps
1. Turn on Wi-Fi on your iPhone (Settings -> Wi-Fi) and Mac (Menu Bar -> Wi-Fi -> Turn Wi-Fi On. AirDrop will still work between the Mac and an iOS device even if both are using different Wi-Fi networks.
2. Turn on Bluetooth on your iPhone (Settings -> Bluetooth) and Mac (Menu Bar -> Apple -> System Preferences -> Bluetooth -> Turn Bluetooth On).
3. Turn on AirDrop on your iPhone (Slide up to access Control Center -> AirDrop -> Choose "Contacts Only" or "Everyone") and Mac (Finder -> Menu Bar -> Go -> AirDrop -> Click "Allow me to be discovered by:" -> Choose "Contacts Only" or "Everyone").



The iOS share icon (middle) as seen in Safari
Selecting the AirDrop option from the Share menu brings up a list of devices that can receive files. 

Troubleshooting
Some users have had trouble with AirDrop functionality between the Mac and iOS devices since it launched with OS X Yosemite. Members on our forums and on Apple's support forums have reported that restarting both devices fixed their problems. If the devices aren't recognizing each other, make sure AirDrop is set to "Everyone" instead of "Contacts Only," as the latter setting has caused some problems for users. A number of users have also realized their Macs are too old to support AirDrop functionality between OS X and iOS after attempting to try out the feature, so ensure that your Mac is a 2012 model or newer by going to Menu Bar -> Apple -> About This Mac.
Article Link: How to Use AirDrop to Share Files Between Macs and iOS Devices