It has been witnessed that since the coming of the cell phone, it has been developed so fast, thanks to the high technology, today, the function of cell phone improves a lot, some even can equal to the computer. People like to change the cell phone, because they want to have more function, but some teenagers lose wise mind on the road of changing cell phone. They want to buy the newest product, so that they can show off. Recently, it has been reported a boy sell his kidney for the purpose of buying an iphone, this is so shocked, the boy is selling his health for a new cell phone. People should be wise to the cell phone, they need to figure out that all the cell phones have some common basic function, some new products’ function is almost the same. They should measure their situation to buy a new one.