What is a Screensaver?
A wallpaper is a photo or image that can be set up to appear in the background on your handset screen when it is active, like wallpaper images that are used on PC screens. Wallpapers can be ordered through a download link on a website, a wap site, a multimedia album or by sending a text message to an SMS “short code” (like 55666), depending on your handset capabilities and your wireless carrier.
A screensaver is a moving, rotating or changing image that engages when a monitor is left idle for a set period of time. Screensavers were especially useful for Cathode Ray Tube (CRT) monitors that were in widespread use before Liquid Crystal Displays (LCDs) replaced them. CRT monitors were subject to “burn-in,” or the tendency for a static image to leave a permanent, ghostly replica of itself imprinted on the screen if the display remained unchanged for too long. Configuring a screensaver to initiate during idle periods helped to prevent burn-in. Although LCD monitors are made with a different technology that is not susceptible to burn-in, they can be subject to what manufacturers like to call “image persistence.” The polarized crystals that filter color to create an image can retain memory if forced to display the same color over a retracted period of time. This usually doesn’t occur if the display is turned off for several hours a day, such as overnight. While image persistence isn’
