Research in Motion, maker of BlackBerry smartphone, said it is preparing to launch an applications store and consumer Internet services in China as part of its push into the world’s top mobile market. The upcoming Chinese App World applications store would follow RIM’s May launch of BlackBerry service in China through China Telecom, one of China’s three major carriers. RIM is also developing service for the homegrown third-generation (3G) mobile standard used by leading Chinese carrier, China Mobile. Shares of Waterloo, Ontario-based RIM jumped as much as 7.7 percent on Friday afternoon, and analysts said the gain could reflect the company’s push into China among other factors.

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