Here you can see how you get SMS over on his mac, if the so is updated to OS X Yosemite.
It’s really smart to answer an SMS and iMessage message directly on your computer. It can be with iOS 8 and a Mac with Yosemite OS X 10.10 installed, and here you can see how.
Note: in order to use SMS Relay, so must your iPhone and computer can be either on the same WiFi network, or have Bluetooth enabled.
To set up “TEXT Relay”
- Open iOS 8 Settings->>->>-forwarding of sms Messages, and activate the computer on which you want to be able to receive SMS messages.
- When you select a computer, then POPs a code on your computer screen.
- Enter this code on your iPhone in order to authenticate the connection.
Should you have problems with receiving new messages on your computer, then try to check the Mac program Messages->> Settings, that your phone number is activated under your account.