Not a cellular phone but the new Cell Processor. The Cell processor is in all the technology press these days. The result of a collaboration between IBM, Sony and Toshiba the Cell processor promises to provide orders of magitude improvement in performance for certain types of microprocessor applications.
The Cell processor is designed to provide high performance at a low price. It is optimized for multiple processor applications (i.e. several of the Cell cores working together). Sony is planning on using the Cell processor in the upcoming Playstation 3. So will your product benefit from this change in the technology landscape? Check out this detailed explaination of the architecture and find out.