Zalo is a popular messaging and video calling app in Vietnam. It allows users to send free messages, make video calls, share photos, videos, and documents.  First, it’s convenient and fast because Zalo helps users connect instantly via text messages and video calls. Second, it has a simple design, making it easy to use for all ages. Bisides, messages and video calls are free if there is an internet connection. And, Zalo offers many useful features, such as money transfers, location sharing, and group chats. However, Zalo also has some disadvantages. It’s time-consuming because users can get caught up in unnecessary conversations. There are security risks. Personal data may be exposed if not used carefully. Finally, Zalo requires an internet connection to function. In the future, people will probably continue to use Zalo. Technology is developing, and apps like Zalo are very important for communication and work.