How does Unicom send messages when it is free?

Unicom users in different provinces and cities have different ways to open free time traffic superposition packages, and the tariffs are also different. For details, please visit Unicom's online business hall and click online customer service.

For example, Beijing Unicom's 2G prepaid (including: World Wind, New Power, Ruyitong) and post-paid customers can apply for GPRS time-free traffic packages. You can send SQXSBY5 or SQXSBY 10 to 100 10 to apply for a free monthly subscription. 5 yuan package 1GB/ 10 yuan 5GB GPRS free time. If you unsubscribe, you can send a text message to10 to cancel the monthly free traffic package. 5 yuan/10 yuan. You can also call local 100 10 or go to the local business hall to order or cancel. Tips: Apply in the current month and take effect next month.