Samsung just expanded Samsung Pay access into Hong Kong along with Sweden, UAE, and Switzerland earlier this month, but Hong Kong was given more of a preview than full-on support. Hong Kong now has full access to Samsung Pay, with six banks having partnered with Samsung to roll out the Korean giant's successful mobile payments service to customers.
Samsung Pay is now active in Hong Kong for customers of Standard Chartered, Dah Sing Bank, Citibank, American Express, and DBS and Bank of China (Hong Kong), and only works with devices from late 2015 and up (no Galaxy S6 or Galaxy S6 edge, but Galaxy Note 5 and Galaxy S6 edge+ users can take advantage of Samsung Pay). As of now, no word on whether or not Hong Kong users will be able to use Samsung Pay on Samsung Gear S2 and Gear S3 smartwatches.
Samsung Pay enters the Hong Kong market in full form, but joins in the mix with Apple Pay (Apple) and Android Pay (Google). Samsung's advantage with Samsung Pay pertains to its MST technology and payment compatibility at traditional credit card terminals, while Samsung's payment rivals Apple and Google rely on NFC terminals for mobile payments. Gear S2 users worldwide join Apple and Google users, but Gear S3 Frontier, Gear S3 Classic, and Gear S3 Classic LTE users get to experience MST in all its glory.