As spyware attacks hit the headlines, how can you tell if your iPhone is being tracked, and what can you do to prevent it?

Using its own built-in motion sensors, the iPhone will track your physical activity throughout the day and any workouts performed via supported third-party apps ... amount of time spent exercising.

Updated on January 16 with a new report into smartphone privacy tracking and a more detailed explanation of the advertising ID that NSA warns users to disable. This follows the leak of sensitive ...