A free program for Android, by 미디어로그Medialog Corp..
In Korea, mobile price plans are divided into two categories: those that include a fixed charge, and those that do not. In other words, you have to pay for the data you use.
The former is the most convenient way to pay, but it also means that you will have to pay for each and every usage. If you do not want to spend money every time you use your phone, you should consider the latter.
The latter is called U + Thrifty Mobile. It allows you to view your phone bill on your device, and it also provides you with a monthly plan and the remaining amount. You can use the latter even if you do not have a fixed phone charge.
If you are a U + Thrifty Mobile customer, you can easily solve it without worrying about data charges in the customer center app.