To build a feature phone, a vast amount lot of software needs to be integrated. Fortunately, the ARM ecosystem includes a very broad range of software partners that have the optimized software you need. Most of the World's feature phones are built with RealView Development Sytem (RVDS) to provide optimum performance with compact code size. RVDS development tools provide a professional development experience and the ability to program with the latest ARM cores such as Cortex-A5.