I would like to have the possibility to use Bluetooth functionality within the Field Service PowerApp. At this moment no Bluetooth API is supported.
We need this for engineers in the field who conduct measurements with gas analyzer devices. We need to connect to these gas analyzer devices in order to receive the measured data.
However, the Bluetooth functionality can be used for more than only gas analyzer devices. We could also connect to Customer Assets with Bluetooth connection in order to read data.

All in all I think Bluetooth should really be available in Field Service Mobile. It will make our solution much more streamlined.