To transfer your smartwatch to a new phone without losing data, the safest path is almost always the same: keep your old phone nearby, make sure your health and fitness data is backed up to the cloud (Apple Health, Google/Samsung Health, or Garmin Connect), then re-pair the watch with your new phone using the same account. Whether you keep your history depends far more on your account than on the watch itself—so signing in with the identical Apple ID, Google account, or Garmin login is the single most important step.
- Your fitness history lives in the cloud account, not on the watch—protect that first
- Apple Watch requires unpairing from the old iPhone before it will pair to a new one
- Wear OS and Garmin let you add a new phone with less friction, but the same login still matters
Before you start: where your data actually lives
A common myth is that your steps, workouts, and sleep logs are stored on the watch. In practice, the watch is mostly a sensor and display; the durable record sits in a companion app and its cloud account. That’s good news, because it means switching phones rarely erases history—as long as you sign back in correctly.
- Apple Watch: Health and activity data syncs to your iPhone and iCloud under your Apple ID.
- Samsung and other Wear OS watches: Data flows into Samsung Health and/or Google accounts.
- Garmin, Fitbit, and similar: Data lives in Garmin Connect, the Fitbit app, or the brand’s own cloud.
Step 1: Back up and confirm your data is in the cloud
Don’t unpair anything yet. First, open your companion app on the old phone and confirm a recent sync.
- Open the watch’s app (Watch app on iPhone, Galaxy Wearable/Samsung Health, or Garmin Connect).
- Force a manual sync so today’s activity is uploaded.
- For iPhone users, back up the phone to iCloud or your computer—the Apple Watch backup is bundled into the iPhone backup automatically.
- Check that you know your account password (Apple ID, Google, Samsung, or Garmin) and can pass any two-factor prompts.
Step 2: Follow the right path for your platform
Each ecosystem handles the switch differently. The table below summarizes the key behaviors before you dive into the specifics.
| Platform | Unpair from old phone first? | Where history is preserved | Old phone needed? |
|---|---|---|---|
| Apple Watch | Yes—required | iCloud / Apple Health (Apple ID) | Strongly recommended |
| Samsung (Wear OS) | Recommended | Samsung Health / Google account | Helpful |
| Other Wear OS | Recommended | Google account / brand app | Helpful |
| Garmin | Not required | Garmin Connect account | Optional |
Apple Watch (to a new iPhone)
Apple ties each watch to one iPhone at a time, so you must unpair before re-pairing.
- On the old iPhone, open the Watch app, tap your watch at the top, then the info button, and choose to unpair. This creates a fresh Apple Watch backup and removes the activation lock tied to that phone.
- Set up your new iPhone and restore it from your iCloud or computer backup—this brings your Health data with it.
- On the new iPhone, open the Watch app and follow the prompt to pair, then choose Restore from Backup.
- Sign in with the same Apple ID to clear Activation Lock.
If you’re setting a watch up more or less fresh, our first-time Apple Watch setup guide walks through the pairing flow in detail.
Samsung and other Wear OS watches
- Confirm your data is in Samsung Health and/or your Google account.
- On the old phone, open Galaxy Wearable (or the Wear OS app) and remove/disconnect the watch.
- A factory reset on the watch is often required before it will connect to a new phone—do this only after confirming your cloud backup.
- Install the companion app on the new phone, sign in with the same Samsung/Google login, and re-pair.
Garmin watches
Garmin is the most forgiving: your history lives in Garmin Connect, so you rarely need a reset.
- Install Garmin Connect on the new phone and log in with your existing Garmin account.
- Add the device through the app; if it’s still paired to the old phone, remove it there first via Bluetooth settings.
- Your activities, records, and settings download from your account automatically.
Step 3: Verify and reconnect the extras
Once the watch is on the new phone, spend a few minutes confirming everything reconnected.
- Check that recent workouts, sleep, and step history appear—including sleep-stage data and SpO2 readings.
- Re-grant notification, location, and health permissions the companion app requests.
- Re-enter Wi-Fi passwords and, for cellular models, contact your carrier to move the watch’s line if needed—see LTE vs Wi-Fi.
- Reinstall payment cards and any third-party apps that didn’t carry over.
Frequently asked questions
Will I lose my workout and health history when I switch phones?
Usually not. History is stored in your cloud account (Apple Health/iCloud, Samsung/Google Health, or Garmin Connect), not on the watch. As long as you sign in with the same account on the new phone, your data should reappear after syncing. The risk comes from resetting a watch before confirming that backup.
Do I need my old phone to complete the transfer?
For Apple Watch it’s strongly recommended, because unpairing on the old iPhone creates the most current backup and releases Activation Lock. Wear OS transfers go smoother with the old phone on hand too. Garmin can be done from the new phone alone, since everything restores from your account.
Can I use my smartwatch across two phones at once?
Generally no. Apple Watch pairs to one iPhone at a time, and most Wear OS watches expect a single active phone. Garmin Connect can be installed on multiple devices under one account, but the watch itself syncs with one primary phone. Plan to fully migrate rather than run both.
Does switching phones drain my watch battery faster afterward?
A temporary dip is normal while apps reinstall and background sync catches up. Battery use should settle within a day or two. If it doesn’t, review our tips on improving battery life and how models compare on longevity.