What message should a mobile user send to 10086 to change the package?

Introduction of tariff change: It can be handled in its own business hall, designated franchise store, 10086, online business hall, SMS business hall, handheld business hall and "China Mobile 10086" official WeChat account. Note: 1. If you participate in the marketing activities of tariff restriction change, this agreement shall prevail; 2. If you have any questions, you can directly send "Online Customer Service", and the customer service staff will consult and explain for you.