1.Press the key menu MENU button.
2.Use the up arrow up and down down arrow arrow keys to highlight Screen & Sounds.
3.Press Select.
4.Use the up arrow up and down down arrow arrow keys to highlight Contrast. Press Select.
5.Use the left arrow left and right right arrow arrow keys to adjust the brightness as required.
6.When completed, press the Done soft key.
7.Press Back / Exit to exit the menus.