Installing & Upgrading OS X Yosemite
With OS X Yosemite and iOS 8, your devices work together in even smarter ways. Now you can make and receive iPhone calls on your Mac, even if your iPhone is in another room. Send and receive both iMessage and SMS text messages on your Mac. Start an email, document, or browsing session on one device and instantly pick it up on another. And turn on the Personal Hotspot on your iPhone right from your Mac so you can get online in an instant..