Apple Watch Series 3 GPS Plus Cellular The all-new Apple Watch Series 3 features cellular. So you can leave your phone and still make calls, get texts, and listen to your music. The all-new Apple Watch model has had a significant update from the first two. This is the first Apple Watch that doesn\u2019t need to be connected to an iPhone to work at all. Now you can make calls and send texts only by your Apple Watch. It is also getting the watch OS update. WatchOS 4 comes with a heart rate monitor overhaul. Steaming through Apple Music will even come to the watch. The Apple Watch Series 3 The Apple Watch Series 3 starts at only $329 with just GPS. Models with a cellular start at $399. The Series 2 is no longer available, and it is retired, but the Series 1 is now available starting at $249.