Depending your Android OS and device, these tips might make syncing easier:
Turn on the Always Connected option in the Fitbit app. This setting improves the Bluetooth connection between your phone and Fitbit device. Note that turning on this feature may cause the battery on your Fitbit device to drain more quickly than normal.Turn on All-Day Sync in the Fitbit app. This setting prompts your Fitbit device to periodically sync with the Fitbit app but may shorten battery life on your phone or Fitbit device.
