Security researchers have discovered a hidden iPhone feature that secretly tracks and saves the meanderings of the phone and presumably its owner. The tracking feature records the phone s movements, including what cell phone towers and Wifi hotspots it connects to, when and where. While that information isn t shared with Apple, it is retained even when iPhone users update their hardware, suggesting that Apple had plans to use the data at a later time. Apple did not immediately respond to requests for comment on the discovery.
Source: https://threatpost.com/secret-iphone-feature-tracks-owners-whereabouts-042011/75149/