Garmin smartwatch owners who use iPhones are reporting widespread connection and syncing problems that, in some cases, make their wearables barely usable. The complaints point to an iOS-related issue rather than a specific Garmin watch model, and many users say the trouble didn’t start overnight—it has been lingering for weeks.
Garmin watches can handle some tasks on their own, but most people rely on the companion app and Garmin Connect to get the full experience. That includes syncing health and workout data, viewing trends, updating settings, and receiving phone notifications on the wrist. When that iPhone connection breaks, the day-to-day value of the watch drops quickly—especially for users who depend on automatic syncing after workouts or want calls, texts, and app alerts pushed to their smartwatch.
Posts from users describe scenarios where an iPhone refuses to connect to a Garmin watch at all. One report says that since February, a Garmin Forerunner 255 Music has been unable to establish a connection with an iPhone 16 running iOS 26.4, and another user echoed the same behavior. Common troubleshooting steps—such as re-pairing the devices or uninstalling and reinstalling Garmin apps—are also said to have made little to no difference.
Similar complaints appear across community discussions involving other combinations, too. For example, a user with a Garmin Fenix 8 and an iPhone 15 Pro running iOS 26.3 reported that the connection wasn’t working properly. Because Garmin’s lineup varies in how much it can do independently, the impact depends on the model and how the owner uses it. For some, the watch becomes severely limited; for others, it’s close to unusable, particularly when notifications and wireless syncing are essential.
There is at least a partial workaround for people who need their workout data recorded: syncing with Garmin Connect can still be done via a wired connection (when Wi‑Fi isn’t being used). That can help ensure fitness and activity data isn’t stuck on the watch indefinitely. But it’s far from ideal—manual syncing is inconvenient, and it doesn’t restore the seamless notification experience that most smartwatch users expect.
As of now, it’s unclear how many users are affected overall, but the consistency of the reports suggests this isn’t limited to a handful of isolated cases. It’s also uncertain whether iOS 26.5 will fully resolve the Garmin-iPhone connection issues for everyone. In the meantime, some users may explore alternative notification options available on Garmin watches, but those won’t replace a stable Bluetooth connection and reliable background syncing.
If you’re currently dealing with these Garmin iOS syncing problems, the most important takeaway is that you’re not alone—and the issue appears tied to iOS behavior rather than a single watch model. Until a broader fix arrives, the wired sync option may be the best way to keep workout history up to date, even if the overall smartwatch experience remains frustratingly limited.
