Cellular phone with improved receiver sensitivity

A cellular phone includes a radio circuit block (102), and a control block (105) including a CPU (1057) for controlling operations of the cellular phone and treating data for the cellular phone. The control block (105) retains an interrupt signal when the radio circuit block (102) receives a radio signal, and delivers the interrupt signal to the CPU (1057) after completion of the receipt of the radio signal by the radio circuit block.