![Got my Charge 4 two days ago. No score, No Data on the device but sleep analysis available on app. Spo2 isn't showing on both either. : r/fitbit Got my Charge 4 two days ago. No score, No Data on the device but sleep analysis available on app. Spo2 isn't showing on both either. : r/fitbit](https://preview.redd.it/xz0yea9sioj81.jpg?auto=webp&s=26bdd5c8ccd700ea99a01d55c7684fe35a49e0a6)
Got my Charge 4 two days ago. No score, No Data on the device but sleep analysis available on app. Spo2 isn't showing on both either. : r/fitbit
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How To Obtain And Analyse Fitbit Sleep Scores | by Jonas Benner | Aug, 2020 | Medium | Towards Data Science
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Frontiers | A Multi-Level Classification Approach for Sleep Stage Prediction With Processed Data Derived From Consumer Wearable Activity Trackers | Digital Health
Using Fitbit data to examine factors that affect daily activity levels of college students | PLOS ONE
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