A method of displaying an advertisement on a display of a mobile communication
terminal is provided. According to the method of displaying the advertisement,
advertisement data is received through a wireless Internet network. The received
advertisement data is compared with advertisement data stored in a storage device
of a mobile communication terminal, to thus update the received advertisement data.
It is determined whether the mobile communication terminal is activated and advertisement
data to be displayed on a display of the mobile communication terminal is selected
from the storage device according to the determination result. The selected advertisement
data is displayed on the display of the mobile communication terminal.