KoreTrak watch top-rated options to help you decide. It's also important to know what to look for, so keep the following advice in mind when shopping around. Pick a Watch That Works With Your Phone Naturally, the first thing you'll want to consider when buying a smartwatch is compatibility. Most of the devices currently available use Wear OS, Google's operating system for wearables. Wear OS supports iOS, but make sure to find out if the features you want are available on iOS before buying in. Fitbit OS and Samsung's Tizen also support both Android and iOS. The Apple Watch, as you'd expect, connects strictly to iOS-powered devices, so it's iPhone-only. Make sure to pick a watch that's compatible with the mobile device you own...