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Charge 4 O2 levels not display on phone showing …..

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New Fitbit charge 4

1 night of sleep O2 levels showing on graph in app but on phone the app tab on status showing blank with …..  

should it be showing on phone if reading in are in the app? Have sync data 

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Yes it should - just checked mine as I normally check only on the app. Try a reboot, connect and start to charge, press and hold the side button, feel the vibration and wait for the smiley face and try again, 

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