Suppose if your Smartphone and Computer are both parts of the Apple ecosystem,
So you can easily answer Smartphone calls to your iPhone on your Mac,
Simply by connecting your number to iCloud, Here is how to set it.
How to Forward Cellular Calls to Your Mac (Operating System)
First, I will recommend you to make sure that both devices are signed into iCloud on the same account.
Remember that both of your devices are connected with the same Wi-Fi.
Now simply enable call forwarding on your Smartphone and Computer.
Here you will need to open the Settings app on your Smartphone.
Simply click on the “Phone” category, After that click on the “Calls on other Devices”,
You will need to make sure that this option is enabled in your Smartphone,
And also allowed to connect in your MacBook.
Next, You will need to open the FaceTime app on your MacBook.
Remember that you are signed into FaceTime and your account is enabled.
You will be able to open the FaceTime preferences with Command+Comma or from the “FaceTime” dropdown in the top menu bar.
You will need to click on the checkbox next to “Calls from iPhone” option.
Now your Devices are linked. Suppose if you are going to add new devices in the future,
Then for that, you will need to re-allow them in your Smartphone’s Settings.
Answering and Making Calls From Your Mac
If you are devices are linked then answering a call is very easy.
You will get all notified of your Smartphone call on your Mac as well.
Here you can press accept or decline from the notification to open FaceTime app.
The best thing is that you can still pick up your phone, Which will make your Mac will stop ringing and vice versa.
If you are going to make calls, Simply open the FaceTime app.
You will be able to see a list of recent and missed calls,
Call on the Phone icon next to anyone on this list to call them again.
Suppose if you are going to make a new call,
I will recommend you to type his/her contact name into the search box or type their Smartphone number into it directly, and press call.
If you are calling other FaceTime users, Keep in mind that “FaceTime” app is a video call and “FaceTime audio” is a regular Smartphone call.