A hands-free apparatus includes a memory and a hardware processor coupled to the memory. The hardware processor is configured to: connect to a mobile phone to enable a hands-free telephone conversation; receive at least one data of outgoing call history data, incoming call history data, missed call history data, and phonebook data stored in the mobile phone; and execute synchronization permission checking processing to check whether transfer of the at least one data is permitted in the mobile phone before receiving the at least one data from the mobile phone.