The A16 gets 250~500 Hz according to Phyphox' database (depending on which A16 model you've got)

But I see Google indeed introduced another permission for this: https://developer.android.google.cn/develop/sensors-and-loca...

Curious that the database shows good rates but you're not seeing it in your instance. The device is from 2024 so it'll have shipped with this new restriction; the database submissions can't be from an older android version. Phyphox must declare that permission or else it shouldn't be in the database like that, but then you should also see higher rates in the app. So I don't get it but Android still can do more it seems, if an app is granted the new permission