Fitbit device is unable to sync.

[Marcinj]

The latest update for Bug fixes and performance improvements did the exact opposite.  I have the app on my I-Phone and my I-pod and right after the update I can no longer update my stats.  The IOS devices are looking for my FitBit and cannot find it. 

moderator edit: title for clarity

[MarcoGFitbit · Accepted solution]

Hello @Marcinj, I hope you're doing well, it's nice to see you around the Fitbit Community. 

Thanks for bringing this situation to my attention. Tell me, which tracker are you currently using? Have you restarted it yet? If so, I would like to suggest you to follow these steps:

• 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.

Additionally, I would like to suggest to go to one of your devices and remove the tracker from its Bluetooth settings as this might interfere when syncing with the other one. My personal recommendation is to remove it form the iPod in case you'd like to receive Notifications from your iPhone. 

Thanks for your patience and understanding, if you need anything else, please feel free to reply. 

[Georgiagal]

Has this worked for anyone, because I’ve had no success

[KatISD]

Just restart your iphone. That is what fixed this exact same issue I had which began on Mon 7/16/18.

[KatISD]

My above comment edited to add: . 

The instructions by Marco G. are good. However, I must say that point #4 casually tacks on the step of "restart your phone again" yet there is no prior step to restart your phone. His list of bullet points and then a 2nd list of numbered points mirrors what is in the HELP files  on the topic of Why won't My FitBit Sync? I think what helped me fix my sync issue was that Marco's version is a bit shorter/smaller and easier to digest and he actually addressed restarting the phone, not just the device (which BTW I still cannot find HELP detail on how or why to RESTART a FB device!).

And it should be noted that the HELP files (accessed via the ios app) ALSO do not specifically instruct you to RESTART your phone. Furthermore if you're trying to troubleshoot this via your ios app, you'll be wasting hours navigating into and out of the HELP files which is required in order to do any of the steps they list. That is also a really unnecessary annoyance when you're trying to fix your device. I've submitted all this to cust svc mgmt as a self help improvement request - this issue of not being able to sync is a big one and the HELP instructions available to customers should give much more emphasis and earlier emphasis (in the step by step) to restarting the phone to solve syncing issues (maybe other issues too? I don't know but that may . I'm not a tech genius but pretty sure you can't break things by doing a simple restart. Having instructions like that easily available (not buried deep in long detailed step lists or in community replies) would likely go a long way to helping customers get their device syncing again. For me it was hours spent researching help files, google searches and  this community which is where I finally found a tip that worked. Really frustrating to waste all that time when if someone had just said a key step for syncing might be solved by doing something as simple as restarting the phone. I also requested they include the DATE of the update to firmware version that shows in the app settings. If one could easily see the firmware version AND the date it was updated on the device, well, it would be very simple to cross reference that to a easily found fitbit.com list of all firmware versions & the dates they became effective, one could very easily deduce that new firmware might be linked to a new problem with their device. The way it is now, there is no easy way to know when that firmware ver got on your device or what the latest ver actually is. Seems a lot more transparency on various key points would help solving support issues like this one. JMHO