Here's how to turn on Handoff: Mac: Choose Apple menu > System Preferences, then click General. Select “Allow Handoff between this Mac and your iCloud devices.” iPhone, iPad, or iPod touch: Go to Settings > General > AirPlay & Handoff, then turn on Handoff.
What does MAC Handoff do?
With Handoff, you can start something on one device (Mac, iPhone, iPad, or Apple Watch) and then pick it up on another without losing focus on what you're doing. ... You can use Handoff with many Apple apps—for example, Calendar, Contacts, Pages, or Safari.
What is Handoff on Apple devices?
With Handoff, you can start something on one Apple device (Mac, iPhone, iPad or Apple Watch) and then seamlessly pick it up on another. ... You can use Handoff with many Apple apps — for example, Calendar, Contacts, Pages and Safari. Some third-party apps may also work with Handoff.