Charge 2 not syncing with iPhone 6

[Chadj52]

Hello, I am having an issues with my charge 2 and my old flex with my iPhone 6s. It says that my Fitbit isnt syncing because “your iPhone’s Bluetooth is off.” I have tried turning it off then on, restarting my phone, and on WiFi and data, at separate times. My Bluetooth works with my Bluetooth speakers and the Bluetooth radio, in my car. It will not sync and it won’t update the tracker. 

Thanks

Moderator edit: Clarified subject

[LanuzaFitbit]

Welcome to the Forums @Chadj52.

Thanks for sharing everything that you have tried.

I moved your post to the iOs board as I think it is better suited for it. 

It is possible that the phone paired with another device, the speakers or the radio. I'd recommend trying to remove those devices from your phone's Bluetooth settings and then trying to sync your Charge 2 again, that should do the trick.

Let me know if you have any further questions.

[Chadj52]

My problem is still not resolved, would the issue be because my phone is an older iPhone, being an iPhone 6s? It takes at least a hour or long to recognize my Fitbit then never connects to the tracker and won’t let me update the tracker

[Baltoscott]

It should work with an iPhone 6S, @Chadj52.  Have you tried restarting the CH2?  I copied the help article for restarting below ...

1. Plug the charging cable into the USB port on your computer or any UL-certified USB wall charger.
2. Clip the other end of the charging cable to the port on the back of the tracker. The pins on the charging cable must lock securely with the port.
3. Make sure the button on your tracker is aligned with the button opening on the charging cable. You’ll know the connection is secure when the tracker vibrates and you see a battery icon on your tracker’s display. Your Charge 2 will begin charging.
4. Press and hold the button on your tracker for four (OR MORE) seconds. When you see the Fitbit logo and the tracker vibrates, this means the tracker has restarted.
5. Unplug your tracker from the charging cable.

Hope that gets things working again.  Let us know how it goes.

[MarcoGFitbit]

Hello @Chadj52, I hope you're doing well, thanks for replying. It's nice to see you too @Baltoscott, I appreciate your help. 

@Chadj52, if you have already restarted your Charge 2 following the steps @Baltoscott posted, I would like to advise you to try the following:

• Make sure the latest version of the Fitbit app is installed on your phone.
• The software on your mobile device is up to date. To check, tap Settings > General > Software Update.
• Make sure there are no other Bluetooth devices around as they might interfere with the syncing process
• Check that your Fitbit device's battery isn't critically low.

If your device still won't sync, try these steps:

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.