Fitbit tracker is unable to sync with my phone.

[Bethb1996]

I have just got my mums Fitbit flex as she has recently bought a new one and I cannot get it to Connect with my phone. 

I have the iPhone 7plus with the newest update and my Bluetooth is on but it is still not working 

any help ? 

Moderator Edit: Clarified Subject.

[BcCdaWWHustler]

Mine stopped syncing as well says it can't find it so I tried to do a reinstall and add device and my Bluetooth can't find it

[HERBERTS]

My blaze will not sync

[jennysundar]

My Blaze is not syncing either.  

[SunsetRunner]

My blaze is not syncing either. 

[MarcoGFitbit]

Hello @Bethb1996, @BcCdaWWHustler, @HERBERTS, @jennysundar and @SunsetRunner, it's great to have you on board, welcome! 

Have you updated the Fitbit app and tried restart your tracker lately? If so, I would like to suggest checking @HelenaFitbit's excellent tips and recommendations that have been proven very helpful for many members in your situation. 

Additionally, in case these steps don't seem to do the trick, please try to set up your tracker as a new device:

1. Go to the Bluetooth settings on your phone and check if your tracker is on the list of paired devices. If it is, tap on it and select Forget this Device.
2. Restart your phone
3. Open the Fitbit app and tap on the Account tab at the bottom of the screen, then tap on "Set up a New Device"
4. Choose your tracker and follow the onscreen instructions to continue
5. When the app asks you to replace your current tracker, please replace it and continue with the process.

Please give it a try and keep me posted in case you need anything else!