SAN FRANCISCO--(BUSINESS WIRE)--Boku, the world leader in carrier billing-based mobile payments services, has announced a partnership with 3 Hong Kong, the mobile division of Hutchison Telecommunications Hong Kong Holdings Limited (HTHKH), a leading mobile operator in Hong Kong. Jennifer Tan, Chief Operating Officer of HTHKH, said: “We are happy to extend our direct carrier billing service with Boku. With in-app purchases charged to a customer’s mobile bill, this eliminates the need to pass on