To provide a cellphone constituted to allow position retrieval even after shutdown by low voltage detection.

This cellphone has an input part (1) capable of staring special power supply restart after the shutdown of the cellphone caused by the drop of battery voltage; distress signal generating parts (2, 3) for generating distress signals when the special power supply restart is started by the input part; and a transmitting part for transmitting the distress signals as transmission wave through a different path from a transmit path of transmit signals other than the distress signals. The transmitting part comprises a frequency converting part for carrying out the frequency conversion of the distress signals into low frequency signals, and transmits the low frequency signals as transmission wave through the different path.