iPhone 4 wallpaper size

[krisyouk]

I made a hello kitty zombie slider and lockscreen background for my girls phone, and used the same image for the wallpaper but the size is off. My question is what is the size for the wallpaper?

[noelbob]

its 640x960. but are you using winterboard to apply that it maybe an @2x issue

[krisyouk]

Thx brother noelbob.