The British Civil Aviation Authority are allowing mobile phones to be operated in calendar, photo viewer or similar mode. This is great progress for phone users, who before where not allowed to use cell phones onboard at all. The British Civil Aviation Authority has decided that during flight mode when the radio is disabled cell phones do not interfere with pilot systems. Users have to make clear that they are in flight mode when their transmitter is off. Sony Ericsson’s P900 smartphone is a good example and displays “FLIGHT MODE” on its display.