A system and method for controlling a mobile terminal transmits collectively messages in different formats, such as LMS and SMS. The message transmission mode is designated by recipient numbers and content is input based on a corresponding message transmission mode. A message can be transmitted to multiple destinations regardless of whether the receiver terminals are able to receive LMS format messages and regardless of whether the receiver terminals are manufactured by different mobile communication providers. In addition, the hardware of the mobile terminal does not need to be re-designed, since the mobile terminal can be implemented simply changing existing software.