Can’t pair Alta and iPhone 10

[SunsetRunner]

I recently got an iPhone 10. I can not pair my Alta with my iPhone 10 (iOS 11.1)

I have rebooted the phone, turned Bluetooth off and back on, removed the Alta from my old phone (iPhone 6), made sure the Alta was fully charged...nothing works. It doesn’t find the device in either the FitBit app or the Bluetooth settings.

[MarcoGFitbit]

Hello @SunsetRunner, have a warm welcome to the Fitbit Community, it's great to have you on board. 

I appreciate you have let me know the steps you've tried in order to try to resolve this issue. At this moment I would like to suggest you the following:

• Restart your Alta, then leave it plugged in and charging.
• Restart your phone one more time. 
• Make sure you have a strong WiFi signal.
• Make sure there are no other Bluetooth devices around that might interfere with the setup process. 

Then, try to set up your tracker a couple of times.

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. 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"
3. Choose your tracker and follow the onscreen instructions to continue
4. When the app asks you to replace your current tracker, please replace it and continue with the process.

Please note that your Alta will not show up in the Connected devices on your phone's Bluetooth unless All-day Sync or Notifications have been set up. Fitbit trackers connect and sync through the app and not directly through the Bluetooth on your phone. 

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