The company, which has 30 employees in its Bellevue and Beijing offices, is creating a social-networking service for cellphones. IceBreaker claims it has more than 150,000 registered members that use it on average two times a week.

The round of funding was co-led by Frazier Technology Ventures and existing investor Lightspeed Venture Partners. IceBreaker would not disclose how much money it raised previously.