Apple Watch Series 9 GPS cannot measure cardio fitness/ Vo2Max

My series 9 cannot measure cardio fitness , no matter how I did (update software, set privacy, open cardio fitness, calibrate, input height weight, exercise various in long duration). Repairing it costs similar to buying new one. How can I do ? Does anyone have the same problem?


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Original Title: Series 9 GPS cannot measure cardio fitness/ Vo2Max


Apple Watch Series 9

Posted on Jun 2, 2025 05:44 AM

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Jun 2, 2025 09:52 AM in response to Billy_Psk

What happens if you start one of the default Apple workouts which can provide the data for VO2, Outdoor Walk, Outdoor Run, Outdoor Hiking?

Can you see this workout data in your Health App after your finished your workout?


But, it will take more than one workout, until a VO2max can be estimated by the Health App:


...

It can take at least 24 hours of wearing your Apple Watch, followed by several Outdoor Walk, Outdoor Run, or Hiking workouts* and passive measurements with your Apple Watch before you receive an initial estimate.


If the Health app detects that your previous cardio fitness estimates could be more accurate, you'll have the option to update your data. In Cardio Fitness, tap Update under Update Your Data. After you update, the Cardio Fitness Data Updated notification shows you the results of the update and how your estimates changed.

...

copied from: Track your cardio fitness levels - Apple Support

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Apple Watch Series 9 GPS cannot measure cardio fitness/ Vo2Max

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