Introduction - If you have any usage issues, please Google them yourself
Introduces the design and implementation of the smart phone system software based on the
embedded Linux. The system software is divided into four layers with the operating system as the bottom
layer, which realizes the transplantations of embedded Linux. The second layer is the system service which
deals with the database service as well as all the business related with cell phones. In the third layer,
the middle layer, the embedded GUI realizes the human-computer interface and the J2ME middleware supports
the download and running of java programmers. The top layer is the application layer of smart phones where
the basic functions and other applications of cell phones are realized.