Comment by eek2121
I did not read the article. Reason: My response is "No shit, Sherlock."
Mobile carriers have so much information about you. They know exactly where you are, what you are doing (location combined with mapping tools) combined with who you are talking to.
They know when you are at home depot, when you are the grocery store, when you are at home, when you are awake, when you are asleep, etc.
In the U.S. there are very few laws stopping them from using all your data. In the E.U. you should definitely read up, as you aren't as protected as you think you are.
Forget Nation/State nonsense. You have an active relationship with a company who, by it's very existence and your business relationship, knows what you do all day long.
Don't even get me started about the rabbit hole surrounding 'incognito'/anonymous browsing.
EDIT: You've probably heard of Man-in-the-Middle attacks, right? They are the man in the middle. They will exploit this as best they legally can (and in certain cases, without regard to legality)
The best way to protect yourself is not to play the game at all. The same goes for your ISP, FWIW.