Log usage - GetPowerBIActivityEvents vs Report Usage Metrics - Platform field Mobile/Desktop

Hi everyone,
I'm looking for a field that, via the getpowerbiactivityevents call, returns the Mobile/Desktop binary information, as reported in the Platform field of the Usage Metrics Report. The User Agent and Consumption Method fields do not completely comply with this requirement: is there a rule to apply to these fields in order to cover all cases and have the Mobile/Desktop information?