What is Unicom's 4g traffic packet SMS for?

Unicom's SMS activation mode for 4G traffic packets is 1, and 4g idle traffic packets in the province are activated-send SMS instructions: "DGXSLL" to 100 10, and activate 3g idle traffic packets in 5 yuan packet 1GB or 10 yuan according to SMS reply instructions. The use time is 23: 00 every day. 2. Open the 4G-flow refueling package-send the SMS instruction: "DGJYB 10" to 100 10, and you can open the 4G-flow refueling package of 10 RMB 100 MB. If the traffic exceeds, it shall be implemented according to the main package tariff. Ordering the flow refueling package takes effect immediately and cannot be cancelled. The flow sorting in the package is valid in the current month. Orders can be placed at most 10 times in the current month, and the number of orders placed on the same day is unlimited, which will automatically become invalid next month. The fee for ordering the flow refueling package will be charged in the current month, and there will be no charge for not ordering next month.