Answer a call from your surfboard. Ask Siri to send a message. Stream your favorite songs on your run. And do it all while leaving your phone behind. Introducing Apple Watch Series 3 with cellular. Now you have the freedom to go with just your watch.
A little support can go a long way. You can receive encouraging emoji from friends. And reminders triggered by your friends' shared activity, the current weather, or your own history give you every reason to run.