6. iOS 11 Handoff and Continuity tips
Enabling Handoff between iOS devices: Go to General > Handoff and then toggle the box.
Accessing Handoff apps: On the Lock Screen press the app icon in the bottom left corner.
Allowing SMS messages on your Mac: To do this you need to enable the feature on your iPhone. Make sure you are running iOS 8.1 or later and then go to Settings > Messages > Text Message Forwarding. Find your Mac or iPad you want to allow access and pair the two devices with a security code. You’ll now be able to see and send Text messages via the desktop.