When you are communicating with other people, chances are that you are being overheard by your very own National Security Agency. Yes, their focus is you rather than the foreign intelligence. Your telecommunication company is faithfully helping them by giving complete access to all your communication details.
Switching off your cell phone wouldn’t hamper tracking your location through the cell phone tracker. NSA carries this out under the protection of the Foreign Intelligence and Surveillance Act while the state of New Jersey DE-legitimized the warrant-less location tracking in 2013.
See the infographics below for learning more about it. From MobiStealth