I once found myself randomly drinking with a guy at a bar in SF who claimed he was there for a law enforcement conference. He told me that there was indeed code

I once found myself randomly drinking with a guy at a bar in SF who claimed he was there for a law enforcement conference. He told me that there was indeed code in the baseband processor of most phones (brought in together with the E911 requirements) that allow law enforcement to not only send the location of any phone but also record audio. Of course, he might have just been bullshitting me.