Viettel Data - Đăng Ký Gói 4G is a free Android app developed by Viettel Data that helps users register and look up 4G packages offered by Viettel. With this app, users can easily register for data, voice, and SMS packages with just one button click.

The app divides the packages according to the needs of users, such as monthly, daily, yearly, combo, and special packages for new SIM cards or students. Additionally, it also categorizes packages based on the amount of money the user wants to spend, such as 5k, 10k, and 15k.

Viettel Data - Đăng Ký Gói 4G is integrated with the shortcode 9123, allowing users to register for packages via SMS. Users can select the package they want and click the registration button to register for the package that best suits their needs.