OMA DM, or something like that. https://en.wikipedia.org/wiki/OMA_Device_Management https://en.wikipedia.org/wiki/OMA_Device_Management Send special SMS, whic

OMA DM, or something like that. https://en.wikipedia.org/wiki/OMA_Device_Management https://en.wikipedia.org/wiki/OMA_Device_Management Send special SMS, which makes the phone contact download instructions on what to do from a given URL. All in the background. Even Pinephone's modem has a few FOTA binaries that handle remote instructions from different operators. I guess the binaries of the OMA DM processing programs are provided by the mobile operators, or co-developed with the modem manufacturer. It can't turn on the camera or whatever, and is disabled by default, but that's just because the modem is not integrated into the main SoC. https://megous.com/dl/tmp/f498105e651c5935.png https://megous.com/dl/tmp/f498105e651c5935.png