NTT Docomo announced that the launch of a new smartphone operating system to rival Google's Android and Apple's iOS had been pushed back owing to development delays. The open source offering called Tizen, based on the Linux operating system, is the product of a tie-up between companies from Japan, China, South Korea, Europe and the United States. The consortium that makes up Tizen Association include Docomo, Intel, Fujitsu, Samsung and LG, Huawei, and Vodafone and Orange.