Assuming that Bluetooth is enabled on the iPhone and you rigged AirDrop to receive incoming files from any Apple user, a pop-up notification should appear on the mobile device’s screen, with a thumbnail and name of the Mac sending the file. Simply hit Accept to get the file. The saved file will probably be accessible through the most logical app: Photos and videos should show up in Photos, website links in a web browser, app links in the App Store, and so on.
Again, if the exchange is between two Apple devices that you own and both are signed in with the same Apple ID, you may not see the option to accept or decline to receive the file. It will just automatically get sent to your iPhone.
The steps for using AirDrop are the same for both the iPhone and the iPad, so if you are trying to orchestrate a file exchange between a Mac and the latter, you can follow this guide similarly. If you find that AirDrop is failing to detect nearby Apple devices that you want to transmit media to, make sure that you have the latest version of every involved gadget’s respective operating systems and that you reboot everything so any updates can take effect if there are any.