BlackBerry Curve 8330
Trying to set a photo taken by the BlackBerry as wallpaper seems straightforward enough to me. However, the result I get is a maybe 40 pixel band of my selected photo at the top of the screen. The remaining maybe 200 pixels to the bottom of the screen remain as the regular theme, not the photo. Weird. In fact, there appears a barely noticeable line of demarcation along that approximately 40/200 pixel area from left to right.
Thanks to anyone who can solve this craziness.

try a battery pull.

Devnull, thanks. I would never have equated a battery pull with this problem. Battery pulls for most everything, I guess. While I had the back cover off, I cleaned the camera aperature. I was hesitant to use moist (but not dripping!) Q-tips to carefully work out accumulated dirt. The camera was giving lousy quality, but is back to megapixel normal. Thanks again!