AirDrop is one of the coolest features you get from being in Apple’s ecosystem. At its most basic, it allows you to send files between your devices–or to your friends, without needing an internet connection. This is a lifesaver if you need to quickly transfer a colleague a file in a place with no internet–like on an airplane. Here’s everything you need to know about iPhone AirDrop, including:

What AirDrop Is
How AirDrop Works
What Devices AirDrop is Available On
How To Use AirDrop

iPhone AirDrop – What Is It?

AirDrop is Apple’s file transfer technology that allows iPhone, iPad, and Mac users to wirelessly send files to other iOS devices or Mac users within 30 feet of each other. AirDrop does not require an internet connection. Instead, it uses Bluetooth and/or Wi-Fi to make a local area connection between two devices so they can transfer files between them – this is why you can use AirDrop to send files to other people even when on a plane or a subway without an internet connection.

What Devices Support AirDrop?

AirDrop supports most Apple devices made in the last eight years. For doing AirDrop transfers between iOS devices, you’ll need to make sure you have iOS 7 or later running on the devices you want to AirDrop between. The following devices are supported:

iPhone 5 or later
iPad Pro
iPod Touch (5th generation) or later
iPad (4th generation) or later
iPad Mini (1st generation) or later

For doing AirDrop transfers between Mac devices, you’ll need to make sure you have Mac OS X 10.7 Lion or later running on the Macs you want to AirDrop between. The following devices are supported:

Late-2008 or later MacBook Pro
Late-2010 or later MacBook Air
Late-2008 or later MacBook
Early-2009 or later iMac
Mid-2010 or later Mac mini
Early-2009 Mac Pro with AirPort Extreme card
Mid-2010 or later Mac Pro

For doing AirDrop transfers between Mac and iOS devices, you’ll need to make sure you have Mac OS X 10.7 Yosemite or later running on the Macs, and iOS 7 or later running on the iOS devices you want to AirDrop between. The following Macs are supported for Mac to iOS AirDrop transfers:

2012 or later MacBook Air
2012 or later MacBook Pro
2012 or later iMac
2012 or later Mac mini
Late-2013 or later Mac Pro

AirDrop only works between Mac and iOS devices. Have an Android phone? Here’s Everything You Need To Know About Fast Share, Google’s Answer To AirDrop.

AirDrop: How To Send A File

To use AirDrop to send a file, it couldn’t be any easier.

Open the file you want to send on your iOS device or Mac.
Click or tap the Share button (it look like an arrow pointing up from a box).
From the Share Menu, select AirDrop.
From the AirDrop list, select one of your other devices or the name of the person you want to AirDrop the file to.

That’s it, you’re done. Once you or your recipient accepts the incoming file on your Mac or another iOS device, the file will be AirDropped wirelessly.

While AirDrop can be used to download photos from your iPhone to your Mac, there are better ways to do it. Check out How To Download Photos From An iPhone To A Mac to find out how.

AirDrop: How To Receive A File

Once you or someone else has sent a file to your device, it’s easy for you to receive that AirDroped file. Here’s how:

A popup will appear on your Mac or iOS device saying someone is trying to send you a file via AirDrop.
Tap Accept to accept the file and it will be transferred to your device.
Alternately, you can tap Decline and the AirDrop file transfer will not be allowed to go through.

AirDrop: How To Protect Yourself

While the convenience of AirDrop is nice, AirDrop has become a favorite tool of sickos like sexual harassers. It’s popular with them because AirDrop does not tell you the actual name of the person sending you the file–only the name of their device–which they can change to anything. NBC News has both a harrowing and completely horrible story about how harassers are using iOS’ AirDrop technology to send threatening and sexually inappropriate messages to strangers in public.

While a person still needs to accept an AirDrop request to receive the actual file, AirDrop gives the user a preview of the file in the notification message. As you can imagine, this makes it easy for one stranger on a packed subway to send a dick pic to his victim in the same carriage.

As NBC News reports:

“Abigail Mentzer was riding the New York City subway to a doctor’s appointment when she says an AirDrop request popped up on her iPhone. A preview image of the file showed a CD with the handwritten message, ‘Songs I’ll choke you out to while wrecking your uterus.’ Feeling disgusted and threatened, she looked around the train car, wondering who had sent it. Then, three more messages came through, including images of a woman’s bare behind and more offensive language.”

Now, by default, Apple makes sure AirDrop is only set to receive file transfer requests from people in your contacts–so by default you’ll know who an AirDrop transfer is coming from. But sometimes a user may set AirDrop preferences to accept files from “everyone”–which means anyone who is within 30 feet of you. Since the sender is not in your contacts, you’ll only see the name of the device they are sending you the file from.

Setting AirDrop to “everyone” is useful in certain circumstances, such as if you are at a professional convention and you want to quickly exchange work-related files with someone you just met. But as NBC showed, this setting can be abused by perverts.

So to protect yourself from AirDrop harassment you’ll want to set your AirDrop settings to off or only contacts. Here’s how to do that.

How To Change Your AirDrop Settings:

Go to Settings > General > AirDrop.
To turn AirDrop off, tap “Receiving Off”.
To allow AirDrops only from your contacts, tap “Contacts Only”.
To let anyone send you an AirDrop file, tap “Everyone”.

Obviously, “Contacts Only” is the best all-around option.

Looking for more tips? Check out How To Delete All Photos From iPhone – The #1 Way To Save Space On Your iPhone. And check out how to use Google’s Nearby Share!

Michael Grothaus

Apple expert and novelist, Michael Grothaus has been covering tech on KnowYourMobile for the best part of 10 years. Prior to this, he worked at Apple. And before that, he was a film journalist. Michael is a published author; his book Epiphany Jones was voted as one of the best novels about Hollywood by Entertainment Weekly. Michael is also a writer at other publications including VICE and Fast Company.

iPhone AirDrop Explained: How To Use It Properly (And Safely)