When you put your phone in airplane mode, that's just an API call to the Qualcomm baseband modem ASKING it to stop. You're not really in control of it
Discussion
Hi, do you know how GrapheneOS accomplishes disabling the cellular radio by any chance?
Airplane mode sends an api call to baseband modem. But its not a hard kill switch like the libreum 5. The end user would have to manually modify it to do that