In fact, the Fujitsu F-Series handsets have managed to pick up a less than desirable nickname, touted to be “infidelity phones” in the Land of the Rising Sun. Basically, the Fujitsu F-Series will feature an extra protective blanket that helps ensure one’s private applications remain truly hidden, including important details such as missed calls, text messages and emails. All it takes is a secret key combination to activate the privacy mode. Sneaky! I am quite sure that Fujitsu did not intend their F-Series’ security/privacy system to be (ab)used in this manner when they first thought of it.