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Your data should still be there on your Charge HR (it has enough memory for 7 days data between syncs).
According to the compatibility list the Note 4 should work ok. There are some troubleshooting ideas in this article:
http://help.fitbit.com/articles/en_US/Help_article/I-can-t-sync-my-tracker/
Note that the step where it suggests a restart of your tracker is worth repeating a few times as it doesn't always work.
Are you in a position to try syncing to a computer? This will help narrow down the problem to either your fitbit or your Note 4
Fitbit Product Experts Alumni are retired members of the Fitbit Product Expert Program. Learn more
Fitbit Product Experts Alumni are retired members of the Fitbit Product Expert Program. Learn more
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