Why is so popular of Ipad2 and iphone4

Lately, the hottest topic of electronic products is ipad2, many people is eager to buying Ipad2 and iphone4, even it is crowed quene. this is not an only phenomenon in the world, no matter it is the ordinary or top-customized models, are being sought, why the design from the United States but produce in China, are so hot??
Cell phones and computers have developed nowadays, not only to meet the communication function, a good usage experience is the key point.Iphone Ipad and create a friendly user-based software systems and user interface, although the mass-produced, you will think that it is top-customized. products. Of course, we have to admire Mr. Jobs's marketing solutions, and the iphone in ipad2 design production processes, they can always create a lot of attention to the topic interesting, such as iphone4 design prototype leaked, Foxconn production in China theft of custom models. For the marketing campaign, mediator appetite. Good product, it is best to allow users to feel that it is customizable, with good marketing, creating a ipad and iphone4 in hot popular trend.