Nokia OS

Nokia OS (NOS ) is the informal name for the operating system of many Nokia mobile phones. The term " Nokia OS" is partly used in the manufacturer's documents. It is a proprietary platform, which is used only Nokia internally and not publicly documented. It is licensed to third parties, nor are direct API provided. However, most NOS devices can be programmed with J2ME. The Nokia OS serves as a basis for mobile phones with the platforms / interfaces Nokia Series 40, Series 30 and Series 20