Smartphone users in China, already excluded from Apple's iTunes music service, have also been denied access to songs from Google's newly launched online music service. Consumers on the mainland, Hong Kong, Macau and Taiwan, like those in most markets worldwide, will initially be excluded from Google Music, which is currently being offered only in the United States through the Android Market, Google's online store for mobile applications, electronic books and videos. A spokeswoman for the US internet giant said: 'Google hopes to bring this service to more users, but the international launch timelines, including those for the greater China region, are not yet available.' About 200 million users own mobile devices that run the Google-developed Android operating system worldwide. A large number of these are in China, where international brands and mainland manufacturers offer a broad selection of Android smartphones and media tablets. However, the limited launch of Google Music marks another blow to music fans in China, who yearn for access to a global online music download service with a vast inventory. Although the iPhone, iPad and iPod have enjoyed brisk sales across Asia, Apple has continued to lock out China and many markets in the region from its iTunes music service. The market research firm Gartner has forecast that global consumer spending on online music services will reach US$6.3 billion this year, up from US$5.9 billion last year.