After you ensure your smartwatch is charged up, the next step is to tap the Apple Watch app on your iPhone. The app appears on your iPhone’s Home screen after you’ve updated to the 8.2 operating system (and you can’t remove it!). If you don’t see the app on your phone’s Home screen, swipe left or right to look for it.
You need an iPhone 5 or newer and the 8.2 iOS operating system installed to use Apple Watch. To double-check what you have, tap Settings→General→About and look where it says Version. Your phone also notifies you about an available update.
Once you open the app, simply tap the Start Pairing tab near the bottom of the screen and then follow the prompts, which ask you to hold Apple Watch up to the iPhone’s camera and then you can align the watch’s face within the viewfinder in the center of the screen. This should do the trick.
If that doesn’t work, tap the Pair Apple Watch Manually option, in orange, at the bottom of the app. You’re prompted to tap the “i” (“information”) app on your Apple Watch to view its name and then tap the corresponding name listed in the app. If it’s not listed, be sure your wireless connection is enabled; therefore, swipe up from the bottom of the screen and tap the icons for Bluetooth and Wi-Fi so they’re highlighted and not grayed out.
Once the pairing is successful, you can adjust some of the watch’s settings from within the app by tapping My Watch at the bottom left of the screen. You can also select Explore (in the bottom center of the app) to watch videos of Apple Watch or select App Store (bottom right of the app screen) to download and install third-party apps to your device.
Keep in mind that you don’t need to turn Apple Watch on or off. Simply raise your wrist and the screen turns on — thanks to its internal accelerometer (motion sensor) — and lower your arm to turn it off. It’s that easy.