Solution, how to send SMS to Unicom's card to open the call reminder service?

Edit the call reminder service sent by short message KTLDXS to 100 10 Unicom. Due to different policies in different cities, the names and charges of call reminder services are also different, such as "call manager" and "call treasure". For example, Guangdong's "Call Manager" service is essentially a call forwarding service. However, unlike general call forwarding, the call manager has the following personalized and humanized services: when it is inconvenient to answer the phone, the call manager can tell the caller why he can't answer the phone. In other words, you can set various call forwarding states, such as meeting, rest and so on. If you need to open the service, you can call the local customer service number 100 10 to find out how to open the service.