About five year ago, iphone became very popular, most young people chased the trend, they would take every measure to buy a iphone, it was said that some teenagers bought their kidneys just for the purpose of buying a kidney, it is silly and unwise. Today, iphone is still the most popular cellphone, it has becomes the symbol of richness and power, people are proud of owning an iphone. But every year, iphone will update, it means if people want to use the newest one, they must buy one iphone every year. This cellphone is not cheap, it is even more expensive than the portable computer. People should be wise to this product, for most people, they don’t have the money to buy one every year, what’s more, they new one and the old one divers not so much. People can save the money to enjoy other things.