After jailbreak iPhone5, the wallpaper or background (really just the white background) doesn't go to the bottom of the screen. It ends about 3/4" inch from the bottom - obviously because iPhone 5 is taller... but where/what is controlling this setting? Is that solid white background really an image somewhere that is now not big enough to fit the screen? It makes it so that messages in conversation at bottom are unreadable.

Wondering how to fix...

Thanks!