Connectivity and data syncing tips

• Connectivity: How to make it work
  • Start with the basics
  • Check your connection
  • If the watch and app don't connect
• Data syncing: What to expect
  • While waiting
  • After syncing completes
  • If you see no data and no sync bar
  • Pro tips to ensure proper syncing

Connectivity: How to make it work

Start with the basics

Ensure the following:

• Bluetooth is turned on

• Your phone and watch are close to each other

• Make sure your watch has enough battery (you won't be able to check this in the app at the top right of the Now tab if you're disconnected, but you can ensure you recently charged the device)

• If the battery is fully drained, place your watch on the charger before reconnecting

Check your connection

When you open the app, check your connection status. You should see a green circle at the top right of the Now screen, confirming you are connected. A red circle means you're disconnected. 

Double-check you're connected by following the steps below:

1. Tap the watch icon in the top right corner of the Now screen

2. This will open the Device Details screen

3. Check that the status shows Connected

If the watch and app don't connect

If Bluetooth is on and the battery is sufficient, but you don’t see the connection right away, don’t worry—this can happen.

What to do:

• Wait up to one minute for the app and watch to connect automatically

• If nothing happens after one minute:

  1. Force close the app

  2. Reopen the app

  3. Tap the watch icon at the top right of the Now screen

  4. Tap Reconnect, and follow the in-app instructions

• If the issue persists, try rebooting your watch:

  1. Force close the app

  2. While wearing the watch, press and hold the crown for at least 15 seconds

  3. Release when you feel a long vibration (this confirms the reboot)

  4. Reopen the app

  5. Tap the watch icon at the top right of the Now screen

  6. Tap Reconnect, and follow the in-app instructions

Data syncing: What to expect

Once connected, your data should sync automatically. Syncing may sometimes complete immediately without the need to wait.

If syncing is not instant, once connected, you should see a syncing bar at the top of the Now screen, which may take up to one minute to complete. 

The syncing process may take one minute or more if the app hasn’t been opened for a while and more data needs to be transferred, for example, when you open the app for the first time in the day after a full night of sleep.

Once the syncing has been completed, you should see real-time data in your Now and Timeline screens.

While waiting:

• Check that the sensors on the back of the watch are lighting up while wearing it. 

• This confirms the watch has enough battery and is collecting data correctly

If the sensors aren't lighting up, follow the troubleshooting steps in this article.

After syncing completes:

• Check that data appears in both the Now and Timeline screens

• Confirm the green connected circle is still visible

If you see no data and no sync bar

1. Wait one minute.

2. If the data didn't sync, fully close and reopen the app

3. Allow time for syncing to complete

4. If that doesn't work, reboot your NOWATCH:

   1. Fully close the app

   2. Press and hold the crown for 15 seconds

   3. Release when you feel a long vibration

   4. Reopen the app and wait for the sync bar

Pro tips to ensure proper syncing

Keep the app active

• Open the app at least once a day

• Keep it running in the background for smoother syncing

Good to know

• Your NOWATCH device can store data for up to 24 hours. 
• If the app isn’t opened within that time, data stored on the watch that hasn't been synced to the app yet may be overwritten.

Keep the app and firmware up to date

Always use the latest version of:

• The NOWATCH app

• Your device firmware

Updates improve performance and fix known issues.