To pair an Apple Watch with your iPhone, you'll need to have the latest version of iOS installed on your iPhone.

You can sync photos to your Apple Watch from your iPhone, to display them on the Photos watch face. Here's how to do it.

In the past, Apple's Fitness app needed an Apple Watch to monitor, track, and display your workouts and fitness routines. Your watch recorded the calories you burn (Move), the length of your workouts ...