User research finds that tightly integrated services with simple and unified design make people use WeChat; mainly through traditional GUI interactions, not a “conversational UI.”
When a multinational company produces a localized country site, usability is often lost. Local advertising agencies design good-looking sites that don't communicate.
User testing on 3 continents confirmed that the main usability guidelines hold worldwide, but many other considerations exist to better support international users.
Users from other countries have special needs related to entry fields for names and addresses, measurements and dates, and information about regional product standards.
Global use of websites leads to international usability problems and coping with the levels of Internet maturity in different countries; many of which are gaining rapidly
The unprecedented international exposure afforded by the Web increases the designer's responsibility for ensuring international usability. Because of the myriad of issues in international usability, I recommend doing international usability testing with users from a few countries in different parts of the world. No guidelines yet published are sufficiently complete to guarantee perfect international usability, so an empirical reality check is always preferred.
When working on a product intended for use abroad your best bet is to conduct international usability testing. You may need to engage a translator or even a local usability consultant, depending on the complexity of the test.