cellar data used by hotspot other devices when hotspot is closed
cellar data used by personal hotspot increases
I have reset statistics but it still increases by "other devices"
iPhone 13, iOS 17
The Hotspot is a Carrier Specific feature. Contact your Carrier (Cellular Service Provider), the agency that issued the SIM / eSIM to you.
See the Pic below the Hotspot is made available based on the Mobile Data selected and the feature that is enabled by the Carrier