09-07-2021, 10:33 PM
(This post was last modified: 09-07-2021, 10:35 PM by Zebulon Walton.)
Yes, the modem is on a USB connection but I think for power it's connected direct to the battery and the dip switch actually pulls a signal down on one of the modem's pins to deactivate it. (This is half-remembered from reading about the hardware some time ago.) For now I'll just leave the battery out of the phone when not in use though as I said it's a bit of a PITA.