As we all know, the smart phone of Blackberry is not for entertainment or, in other words, they are not designed to be play. The entertainment function may be not as powerful as other smart phone like sumsung or Apple, but it still has a broad market. The main reason for this phenomenon is that the company only focus on parts of consumers and satisfy their demand. Though Blackberry dose not develop a lot of software for their smart phone to make them more attractive to the youth, they still have a lot of loyal customers who look the entertainment software in their phone as redundant things.