How to check if my Flex 2 is already linked to the account.

[Roanmae]

how to determine if the tracker is already activated without syncing it to the phone?

im using iphone x and im having a hard time to sync on my device

Moderator Edit: Clarified Subject.

[MarcoGFitbit]

Hello @Roanmae, thanks for joining the Fitbit Community, it's great to have you on board. 

I appreciate your question and for sharing your experience with us. To check if your Fitbit device is already linked to your account, please go to the Fitbit app and tap on Account, if the device is already linked, it will show up under your name. If it's not showing, please set it up as a new device again:

1. Open the Fitbit app and tap on the Account symbol at the top right corner of the screen, then tap on "Set up a New Device"
2. Choose your tracker and follow the onscreen instructions to continue
3. When a pop-up appears asking you to Pair your tracker to your device, tap on Pair and continue.

If your device is already set up but it's not syncing, try the following:

1. Force quit the Fitbit app. 
2. Go to Settings > Bluetooth and turn Bluetooth off and back on.
3. Open the Fitbit app.
4. If your Fitbit device didn't sync, restart your phone again.
5. Open the Fitbit app.
6. If your Fitbit device didn't sync, restart it one more time.
7. If your Fitbit device won't sync after the restart, log in to your Fitbit account on a different phone, tablet, or computer and try to sync.
8. If your Fitbit device still doesn’t sync, remove all other Fitbit devices from your account and from the list of connected Bluetooth devices on your mobile device and try to sync.

I hope this can be helpful, give it a try and keep me posted in case you need anything else.