Use a soft cloth and water to clean the screen. Squirt a little water on the cloth (never directly on the screen), and wipe the screen with the cloth. Do not use abrasive or ammonia based window cleaners as they can damage LCD screens.
According to the U.S. Environmental Protection Agency (EPA), Americans discard about 125 million cell phones every year, which creates 65,000 tons of waste.
While it may seem a bit quirky in the United States, all camera phones sold in South Korea and Japan are required to make a clearly audible sound whenever someone takes a picture.