Disclosed are an electronic device and an electronic device control method that can use address information on the basis of an inputted string. The disclosed electronic device is provided with: a memory (44) that stores an address book that has names and address information; input keys (14) for inputting strings; a display unit (21) that displays both an input string inputted via the input keys (14) and a conversion candidate string which is a conversion candidate for the input string; a search execution unit (46) that searches the address book on the basis of an input string inputted via the input keys (14); and a control unit (45) that has the display unit (21) display, as a conversion candidate string, a name or address information that corresponds to the input string and was searched for by the search execution unit (46).