Method for changing priority for waiting mobile terminal in mobile terminal

A method for changing standby priority of waiting portable terminals in a portable terminal is provided to enable the first portable terminal to perform a video call by changing standby priority for at least two portable terminals which demand the video call while the first terminal performs the video call with the second terminal. The first portable terminal displays standby priority according to sequence of a video call being requested by plural portable terminals while performing the video call with the second portable terminal(S401-S407). When sensing a change request for the standby priority, the first terminal transmits a standby priority change request message to a mobile communication network(S409,S411). If a standby priority change complete message is received from the mobile communication network, the standby priority is changed and the changed priority is displayed(S415,S417).