Does the Samsung Galaxy Fit3 work with an iPhone?

How the Galaxy Fit3 pairs, and why iPhone is locked out

Here's the mechanism, and it's simpler than the marketing makes it sound. The Fit3 doesn't talk to your phone through generic Bluetooth alone, it pairs through Samsung's Galaxy Wearable app, the software that actually handles the syncing, the notification routing, the workout logging. That app is built for Android, full stop. Apple's operating system doesn't grant outside apps the kind of deep background access Samsung's ecosystem needs to push heart rate data, sleep stages and call alerts to your wrist in real time, so the pairing simply never completes on an iPhone. No cable, no setting, no workaround changes that. On an Android phone, though, the rest of the design earns its keep. The body is 18.5 grams of aluminum, light enough that you forget it's there on a long run, wrapped around a 1.6 inch AMOLED screen bright enough to read mid sprint without cupping your hand over it. The 208mAh battery is the real engine here: because the screen only lights fully on wake and the sensors sample in bursts rather than a constant stream, you get roughly fourteen days before it needs the dock, which means it survives a full training block without ever interrupting one. Auto workout detection watches your movement pattern and starts logging a run or a swim before you've reached for a button, and the 5ATM plus IP68 rating means the pool and the rain are non events, not decisions you have to make first.