The following excerpts are from a piece by Joe Tonelli (AirDrop Is Your iPhone’s Most Underrated Tool). I love this feature and, like Joe, use it daily to move file between my phone and my laptop.

AirDrop is kind of a miracle. Without any internet connection or cell service whatsoever, you can still send documents, photos, videos, nearly anything, between any Apple devices, as long as they are physically relatively close to each other. You might think you need a wireless network or cell service to send things because your iPhone will prompt you to turn on wifi and Bluetooth before you use AirDrop, but that isn’t the case. Apple is simply using the wi-fi’s radio signal to cleverly create an encrypted peer-to-peer connection between the devices. Once Bluetooth senses another device nearby, you’re in business.

One of the best things about AirDrop is that there appears to be no file size limit. I don’t think the importance of that fact can be overlooked. Consider the other primary ways of sharing items between computers. Assuming you don’t have AirDrop, you’d likely email something to someone (or to yourself). Gmail’s file size limit is 25MB. So you go through Google Drive, fine. However you’re still stuck with the lengthy process of uploading and then downloading the (presumably large) file. Without a solid internet connection (pretty much anything less than LTE or a reliable wi-fi connection) this will be near impossible or take hours and hours. Sure, wireless internet is nearly ubiquitous these days but even in NYC there are places where I don’t get signal (or don’t want to connect to public wifi).

Of course there are Apple alternatives like AnySend or Deskconnect, and interspecies options like Zapya or Xender for you Windowsheads out there. They largely accomplish the same thing, and I’m sure that software all works fine. But AirDrop is already on your damn phone.