One of the highlights of the Apple WWDC 2014 has been the announcement of the Handoff part of the Continuity features of OS X Yosemite. With OS X Yosemite and iOS 8, devices recognize when they are near each other, enabling new features that let them work seamlessly together. You can move back and forth between devices without having to stop using any application.
One can even make and receive iPhone calls right on their Mac. When the iPhone rings, you will see a notification on the Mac showing the caller’s name, number, and profile picture. Click the notification to answer, and your Mac becomes a speakerphone. You can also decline the call or respond with a quick iMessage. Making a phone call from Mac is just as easy.
With OS X Yosemite and an iPhone running iOS 8, you can send and receive SMS and MMS text messages right from your Mac; regardless of the phone they have, the message would toggle between an iMessage and normal SMS/MMS.
Verify if your Mac supports Handoff:
Handoff work only on newer Macs that support Bluetooth 4.0 and the Bluetooth LE (low energy) technology. Not all Macs support this. To check if your Mac supports Handoff, check for the Bluetooth’s LMP version. Go to the Apple Menu, choose About this Mac, then click More Info, and then click on the System Report Head to the Apple Menu, then go About This Mac > More Info > System Report > Bluetooth. Look at the LMP Version. The version needs to be 0x6 for Handoff to work.
Alternatively, you can also run this command on terminal
system_profiler SPBluetoothDataType | grep LMP
How to Activate Handoff:
Step 1: Go to System preferences > General and then click on the allow handoff box at the bottom.
Step 2: Now, on your iOS 8 powered device, go to Settings > General and enable hand off.
Step 3: On your Mac and open FaceTime > preferences and check the allow iPhone calls box.
Once you have set all things up, you are all set to use HandOff.