About 500 millions cellphones were trashed in 2007. Some people keep the old phones as backup or gave them to friends and family, some sell them on ebay, some simply put them in trash can. ReCellular is the largest cellphone recycle company in the U.S. The company collects about 50 millions cellphone a year, 60% of which are still in working condition. ReCellular refrubish about 15% of them, and sends the rest to a company called  Sims Recycling Solutions, where the cellphones are broken in parts then sorted out based on materials.There are about 2.2kg of silver, 250g of gold in every ton of cellphone.