A method of facilitating the provision of an image as a background wallpaper of a user interface for display on a touch-sensitive display screen of an electronic device, the device being configured to display the user interface and wallpaper in first and second different orientations during use, characterised by: generating, based on the image, a first thumbnail representation (210a,b; 220a,b; 310) of the appearance of the display having the image as the background wallpaper in a first orientation, the first thumbnail representation showing how the image as the background wallpaper would be obscured in use by visual elements of the user interface when in the first orientation; generating, based on the image, a second thumbnail representation (212a,b; 222a,b; 312a,b) of the appearance of the display having the image as the background wallpaper in a second orientation different from the first orientation, the second thumbnail representation showing how the image as the background wallpaper would be obscured in use by the visual elements of the user interface when in the second orientation; simultaneously displaying on the display screen the first and second thumbnails; and providing user interface functionality enabling the user to separately manipulate the representation of the image shown in each of the first (210a,b; 220a,b; 310) and second (212a,b; 222a,b; 312a,b) thumbnails to adjust how the image would appear as a wallpaper background in that orientation, wherein providing the user interface functionality comprises: providing a full screen representation of the appearance of the display having the image as the background wallpaper corresponding to and in response to a selection of one of the first (210a,b; 220a,b; 310) and second (212a,b; 222a,b; 312a,b) thumbnails; adjusting the representation of the image as the wallpaper background in the full screen representation relative to overlying user interface features responsive to touch gestures detected on the display screen in relation to the background wallpaper; and simultaneously re-displaying on the display screen the first (210a,b; 220a,b; 310) and second (212a,b; 222a,b; 312a,b) thumbnails when adjustments made to the representation of the image in the full screen representation are rejected, wherein, if the user accepts the adjustments, the thumbnail selected for adjustment is updated before being displayed to reflect the accepted adjustments. generating, based on the image, a first thumbnail representation (210a,b; 220a,b; 310) of the appearance of the display having the image as the background wallpaper in a first orientation, the first thumbnail representation showing how the image as the background wallpaper would be obscured in use by visual elements of the user interface when in the first orientation; generating, based on the image, a second thumbnail representation (212a,b; 222a,b; 312a,b) of the appearance of the display having the image as the background wallpaper in a second orientation different from the first orientation, the second thumbnail representation showing how the image as the background wallpaper would be obscured in use by the visual elements of the user interface when in the second orientation; simultaneously displaying on the display screen the first and second thumbnails; and providing user interface functionality enabling the user to separately manipulate the representation of the image shown in each of the first (210a,b; 220a,b; 310) and second (212a,b; 222a,b; 312a,b) thumbnails to adjust how the image would appear as a wallpaper background in that orientation, wherein providing the user interface functionality comprises: providing a full screen representation of the appearance of the display having the image as the background wallpaper corresponding to and in response to a selection of one of the first (210a,b; 220a,b; 310) and second (212a,b; 222a,b; 312a,b) thumbnails; adjusting the representation of the image as the wallpaper background in the full screen representation relative to overlying user interface features responsive to touch gestures detected on the display screen in relation to the background wallpaper; and simultaneously re-displaying on the display screen the first (210a,b; 220a,b; 310) and second (212a,b; 222a,b; 312a,b) thumbnails when adjustments made to the representation of the image in the full screen representation are rejected, wherein, if the user accepts the adjustments, the thumbnail selected for adjustment is updated before being displayed to reflect the accepted adjustments.