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A comment on US cell carriers are selling access to real-time phone location data. Parent comment

Re:US cell carriers are selling access to real-time phone lo... by cptskippy on Wednesday May 16, 2018 @11:21AM (#17083094)
Most cellular devices have a Baseband processor with RTOS or run a hypervisor that runs a RTOS and your phone's operating system.

These OS images are untouched by your custom ROM because they're black box.

https://en.wikipedia.org/wiki/Baseband_processor

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