With brightness at 20 percent or less i see it on white and grey backgrounds, in fact the brightness settings screen is a perfect example as it is a grey , darj background .
To test your phone , just take down the slider for brightness and watch for the streaks to appear .
One of way too many issues on this phone , none of which i have on a galaxy 2 or original droid or wife's new Razr !
Banding on the display plus it looks horrible unless brightness is cranked up , six hour battery life, weak speaker , much slower cdma speeds compared to the Razr , guess this is related to lower signal (less db) . Oh and the camera , just about as goog indoors as my orig Droid .
Why cany vzw offer the gs II ? Even with a lower resolution, such a better phone and it will get ICS.