The VietnamTa application is designed for Vietnamese users on mobile phones, which are issued and operated by a company located in Vietnam. Main function: • Quick, low-cost installation of memory. • Provides a user-friendly interface with a better feel when surfing on the screen: buttons and display information clearly do not cause eyesight. • Good compatibility with major social networks today. • See what your friends are doing. • Share, update photos, videos and useful information for friends. • Users can participate in more activities: Events, Blogs (Forums), Forums (forums), ... • Receive notifications when friends like or comment on your posts.