Process for optimized navigation in display menus of a mobile terminal and associated mobile terminal

A mobile wireless communication terminal endowed with a user interface having a display means and a navigational cross. The navigational cross has functionalities complementary to the functionalities for up/down movement. The process includes displaying with the display means a selection menu of items, manipulating the navigational cross to select an item, then alternatively displaying, in response to activation of the first of the complementary functions of the navigational cross, a first batch of possible actions on the data associated with the selected item, or displaying, in response to activation of the second of the complementary functionalities of the navigational cross, a second batch of possible actions on the data associated with the item selected.