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Im Sorry I do not understand your question
If you need to update your app on the phone search for fitbit and see if there is an update
Bluetooth go to settings on you phone and make sure it is linked
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@suzia Welcome to the Fitbit forums! I moved your post to the iOS App Board as there are more chances for you to receive an answer to your inquiry here.
Thanks for posting the situation you are having while updating the Fitbit app.
To update the Fitbit app, please do the following:
- Tap the App Store app.
- Tap the Updates tab. If the Fitbit app has an update, you’ll see it in the Available Updates list.
- Tap Update.
If you are referring that you are having trouble to sync your tracker; please follow these syncing troubleshooting steps to sort that out.
@WendyB Thanks for your help on this thread.
Keep me posted! 
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