Importance information must know before we create WVGA wallpaper.

WVGA aspect ratio
16:9 HDTV

WVGA dimension
480x800 (portrait)
800x480 (landscape)

WVGA device
Sony Ericsson XPERIA X1.
Samsung I8000 Omnia II, S8000 Jet, B7610 OmniaPRO, M8910 Pixon12.
LG KM900 Arena, GD900 Crystal, GC900 Viewty Smart.
HTC Touch Pro2, Touch Diamond2, Touch HD, MAX 4G, Shift.