How does Unicom card send a message to open a free time flow of 5 yuan?

Users of Guangdong Unicom's 3G voice package (including all post-paid and pre-paid packages, excluding all kinds of Internet card packages, family fun supplementary cards and WeChat users) can apply for 5 yuan package 1.5G "3G free play" free time discount superposition package, and the monthly function fee is 5 yuan, including1.5g free time traffic, which exceeds the main package fee. The free time period is from 0 to 9 every day. Edit the short message "3GSYW5" and send it to 100 10 to apply for opening. However, different provinces are different. Users from other provinces can call the local hotline 100 10 to inquire about the opening mode.