With Handoff, you can continue on one device where you left off on another. Work on a presentation on your Mac mini, then continue on your iPad. Or start an email message on your iPhone, then finish it on your Mac mini. View a message on your Apple Watch, and respond to it on your Mac mini. You don’t have to worry about transferring files. When your Mac mini and devices are near each other, an icon appears in the Dock whenever an activity can be handed off; to continue, just click the icon.
Note: To use Handoff, you need an iPhone, iPad, or iPod touch with the Lightning or USB-C connector and iOS 8 (or later) or iPadOS installed. Make sure your Mac mini, iOS device, or iPadOS device have Wi-Fi and Bluetooth turned on and are signed in with the same Apple ID.