Free software, without ads, helps you actively register for voice packages and access 4G network for your Viettel sim in a new way: full of information, simple and fast.
In particular, the software solves the inherent limitation of many other applications, which is to list a lot of attractive packages but cannot be registered because those packages do not apply to your sim. Instead, the software brings exactly the packages for you, without displaying redundant information that causes you to lose more time to look up and register over and over again.
Although the software development team has tried very hard, it is inevitable that mistakes can be made. We look forward to receiving your comments to improve the following versions. Sincere thanks.