Is SMS relay activated in Yosemite? I can make and receive phone calls via my Mac now that I've upgraded to Yosemite; but when I get a regular SMS, it shows up on my phone but not in the Messages app in Yosemite. Also, when I try to send an SMS to a number that's not registered with iMessage from the Messages app in Yosemite, all I get is an error that the phone number is not registered with iMessage. I've signed out and signed back into my Apple account in Messages in Yosemite and I still can't seem to get SMS relay to work. Any ideas? Edit: Nevermind. According to a Mashable article I just read, SMS Relay will be rolling out with iOS 8.1 on Monday.