Updated July 6, 2026
How to Connect Galaxy Watch 4 to Your iPhone.
Yes — the Galaxy Watch 4 works with iPhone. Pair it with the Lynio app and you get calls, notifications, contacts and health sync in about 3 minutes.
The watch that started Samsung's Wear OS era: 40mm or 44mm aluminum, the Exynos W920, and the first BioActive sensor with body-composition (BIA) analysis.
LYNIO
Wear OS ✓
Google's watch platform
Bluetooth ✓
Wireless pairing
Google Play Store ✓
Install Lynio Watch
About the Galaxy Watch 4
The Galaxy Watch 4 (2021) started Samsung's Wear OS era: 40mm and 44mm aluminum cases, the Exynos W920, and the first BioActive sensor with body-composition (BIA) analysis on a smartwatch.
It's also the generation where Samsung dropped the iPhone support its Tizen predecessors had — pairing became Android-only via Galaxy Wearable. Lynio restores the iPhone connection: Lynio Watch installs from the Play Store on the watch, pairs to your iPhone over Bluetooth, and day-to-day everything runs through iOS. You may need brief access to an Android phone for the first setup.
The Watch 4 remains in Lynio's Optimized tier, with calls, notifications, contacts and Apple Health sync verified on this model.
Connect in 3 Steps
Install Lynio Watch on your Galaxy Watch 4
Open the Google Play Store on your Galaxy Watch 4, search "Lynio Watch" and tap Install. Your watch's Bluetooth will handle the rest.
Follow the in-app pairing guide
Open Lynio on your iPhone. It walks you through pairing step by step — takes about 2 minutes.
What You Get After Pairing
Calls on your wrist
iPhone notifications
Caller ID & contacts
Health → Apple Health
Music control
Auto reconnect