1. Airdrop is a feature that allows you to transfer files between Apple devices. 2. You can use Airdrop to transfer files from your iPhone to your iPad, or from your Mac to your iPhone. 3. Airdrop is available on all Apple devices running iOS 7 or later, and on all Macs running OS X Lion or later. 4. To use Airdrop, simply open the Control Center on your iOS device or the Finder on your Mac, and select the device you want to transfer the file to. 5. Then, select the file you want to transfer and tap the Share button. 6. Airdrop will automatically transfer the file to the other device. 7. You can also use Airdrop to transfer files between two Macs, or between an iOS device and a Mac.