Đăng ký gói 3G4G Viettel is an Android application developed by SmartsAppLtd that aims to help users quickly and easily register for 3G/4G data packages that are suitable for their needs. The app compiles all the latest data packages and clearly categorizes them for easy reference.

Moreover, the app provides a quick registration feature for data packages, integrated with common services that users often use such as checking data usage, subscription information, and package cancellation. The app operates without requiring login or internet connection and works through SMS mechanism, ensuring 100% free of charge.

Please note that this app is a compilation of SMS registration codes for data packages that helps users remember and choose suitable packages through SMS to the hotline numbers.