The S9 chip gave Series 9 two capabilities that need no phone at all: Double Tap - press index finger and thumb together twice to trigger the primary action in any app - and on-device Siri, which processes requests locally on the watch. Peak display brightness doubled to 2,000 nits. Apple designed it for iPhone. Merge pairs it with Android instead: one iPhone activation, then Series 9 connects to your Android phone, bringing rich notification interaction, health sync to Google Fit, and the Merge feature set through the watch's new interaction paradigm.
What Merge enables on Android
Double Tap is the natural way to interact with Merge on Series 9 - press thumb and index finger together twice to answer incoming notification actions, control music, or trigger quick actions without touching the screen. Every Android notification arrives on the watch in real time, and you control which apps deliver alerts and which notification types come through per app. Message replies are available directly from the watch, so the combination of Double Tap and Merge makes Series 9 one of the most interaction-friendly Apple Watches for Android users.
Health data syncs to Google Fit and Health Connect: workouts, heart rate, sleep, steps, and calories. ECG readings from the watch sync to the Merge app on Android, so your ECG history is on the platform you're actually using. Music playing on your Android phone is controllable from the watch. Find My covers both directions - ring the phone from your wrist, or the watch from your phone.
The Merge connection is end-to-end encrypted and works over Bluetooth or over the internet when phone and watch are apart. Smart Hotspot keeps the watch online automatically when it moves away from Wi-Fi - Merge handles the hotspot management so you don't have to.
One-time iPhone activation
Apple Watch needs an iPhone for the initial setup - it's how the Apple ID linking, software configuration, and App Store access get established on the device. You do it once and don't need the iPhone again.
Series 9 supports watchOS 11, which means you'll need an iPhone XS or later (or iPhone SE 3rd generation) running iOS 18 or later. Your own iPhone? The Watch app on your iPhone takes you through everything. Borrowing a phone? Use Set Up for a Family Member in their Watch app, configure it with your Apple ID, and make sure both Apple IDs are in Family Sharing - you can create that group during setup. After activation, watchOS updates install directly on the watch via Settings - General - Software Update over Wi-Fi.
Installing Merge
Both apps need to be installed before you pair.
- On your Android phone, search for Merge Watch in Google Play and install it.
- On your Apple Watch, search for Merge Watch in the App Store and install it.
Pairing Series 9 to Android
Keep phone and watch within a few feet of each other - the Bluetooth discovery and PIN exchange are quick but work best at close range.
- Open Merge on your Android phone and approve every permission it asks for.
- Merge still open on your phone - open it on your Apple Watch and approve the Bluetooth prompt.
- Your Android phone will appear on the watch screen - tap it.
- A PIN shows on the watch - enter it on your Android phone. Pairing completes in seconds.
- If you need a Merge subscription, you'll be prompted now.
- On your Apple Watch, grant notification access and health permissions.
- On your Android phone, approve the health permissions prompt.
Day-to-day with Series 9 on Android
Double Tap changes how you interact with Series 9 in ways that matter most when your hands are busy - pinch index finger and thumb together twice to answer an incoming notification, dismiss an alert, or control music without touching the screen at all. It's the most natural hands-free interaction model any Apple Watch has offered, and it works fully with Merge on Android. The 2,000-nit peak brightness means the display stays readable outdoors in direct sunlight without shielding the screen. On-device Siri handles watch-side requests without a phone connection or network round-trip. Android notifications, health data to Google Fit and Health Connect, and Merge's internet connection when the devices are apart all continue running in the background without any attention needed.
