Fitbit Flex 2 User's Manual

To reset your Fitbit Flex 2, remove the tracker from the wristband, plug the charging cable into a USB port, and insert the tracker into the charging cable. Then, press the button on the charging cable three times within five seconds. The tracker will vibrate and the LEDs will flash, indicating a reset.
Ensure Bluetooth is enabled on your device, restart your phone, and try syncing again. If the issue persists, restart your Fitbit Flex 2 by following the reset instructions. Make sure the Fitbit app is up-to-date and your device is within range of the tracker.
Fitbit Flex 2 automatically tracks your sleep patterns. Ensure you wear the tracker snugly on your wrist while sleeping. In the morning, open the Fitbit app to see your sleep data, including time spent in different sleep stages.
Remove the tracker from the wristband and insert it into the charging cable. Plug the cable into a USB port. A fully charged Fitbit Flex 2 may take up to two hours. The LED lights will flash to indicate that the tracker is charging.
To change the wristband, gently push the tracker out of the wristband. Insert the tracker into a new wristband until it clicks into place. Ensure the tracker is secure to avoid it falling out.
The Fitbit Flex 2 is water-resistant up to 50 meters, making it suitable for swimming and showering. However, it is not recommended for diving or high-pressure water activities.
To update the firmware, ensure your tracker is charged and connected to your device. Open the Fitbit app, tap the device icon, and follow the on-screen instructions for any available updates. Maintain a stable connection during the update process.
Fitbit Flex 2 automatically tracks swimming activity. Wear the tracker while swimming, and it will detect pool lengths and duration. Access your swimming stats in the Fitbit app after your session.
Ensure your phone's Bluetooth is on and the Fitbit app has the necessary permissions. Check that the 'Notifications' setting is enabled in the app. Restart both the tracker and your phone if notifications are still not coming through.
Download and install the Fitbit app on your smartphone. Open the app, create a Fitbit account, and follow the on-screen instructions to pair your Fitbit Flex 2 with your phone. Ensure Bluetooth is enabled during setup.