A portable phone includes dial keys (2) including at least one specific key and unspecific keys, and a processing unit (3). The processing unit determines whether one of the dial keys which is operated in a first mode is one of the unspecific dial keys, and changes an operation mode from the first mode to a second mode when the operated dial key is one of the unspecific dial keys. The portable phone further includes a display unit (5). In a telephone number searching operation mode as the second mode, the processing unit reads out a list of data associated with destination phone numbers from a storage unit (4) and controls the display unit to display as a non-dialing operation. Also, the processing unit controls the display unit to selectively scroll the list of data in one of upward and downward directions in response to an operation of one of the unspecific dial keys.