Samsung SPH-N400 - Manual (Page 36)

Section 2: Understanding Your Phone
2B: Controlling Your Phone’s Settings 35
6. Press for Wallpaper .
Changing the Contrast
To adjust the contrast on the phone’s display:
1. Press for Main Menu .
2. Press for Settings .
3. Press for Display .
4. Press for Contrast .
5. Press the navigation key left or right to select the desired contrast.
6. Press to Save .