Maybe this. Most smartphones have a modem inside, this modem has a separate closed-sourced operating system and it usually has the main priority in controlling the smartphone relative to the processor running the main operating system, such as Android. Sometimes the modem has access to the microphone or memory, even bypassing the CPU. Although maybe everyone already knows that.
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
replies: