How does China Unicom open the short message sending function of weather forecast?

Opening the weather forecast by SMS means that different cities send different contents and different fees. Take the local night weather forecast with the code1065581210 ordered by Shandong Jinan Unicom as an example, and send "1 1" to 10658 1265438. A communication fee of 0. 1 yuan/message is charged for sending customized short messages, which is deducted according to the natural monthly fee and automatically renewed. If you don't need to use it, please cancel it in time to avoid any cost.