How can a mobile phone query the package usage of other mobile phone cards?

Telecom's phone bill inquiry:

1, SMS business hall: send a short message "1" to 1000 1, and inquire the local phone bill according to the reply information. You can also send a short message instruction directly to 1000 1 to inquire about related expenses.

2. Online business hall: enter the product number and password, log in to the online business hall of Jiangsu Telecom, and inquire the fees of Tianyi mobile phone, fixed telephone, broadband, wireless broadband and Tianyi campus card through the "self-service-fee inquiry" column.

3. Log in to the handheld business hall, enter the product number and the corresponding password, and log in to the handheld business hall. You can check the fees of Tianyi mobile phone, fixed line, broadband and Tianyi campus card through the column of "Fees Inquiry".

Specific query rules can be found in Baidu's "Jiangsu Telecom 10000 Zhihu Search".