An electronic device is described that comprises a flexible display with at least two extendable display sections, each display section being movable to an extended position and supported by an associated hold out mechanism. The handle is preferably biased against movement out of a rest position relative to the frame. Secret data in the information is stored in intermediate states of the multilevel flash memory between the minimum and maximum voltage level states. Following stabilization of the phase dependent control voltage, a phase detector of the clock synchronization circuit is activated.