How does Unicom send short messages to charge Q coins?

If you are a mobile phone user of Jiangsu Unicom, you can pay attention to "Wo Jiangsu" and click "Menu-Self-Service-Personal Center -QQ Currency Recharge". The system will display your bound mobile phone number, enter the QQ number and SMS verification code you want to recharge, select the number of QQ coins and pay, and send a SMS notification after the recharge is successful. Tips: Before April 30, 20 16, you can enjoy a 20% discount on recharging Q coins through "Wo Jiangsu"; The recharge of Q coins needs to be bound to the mobile phone number of Jiangsu Unicom, and the phone bill balance should be sufficient.