Why didn't Unicom deduct the monthly rent with a reminder message?

There should be no reminder of deduction at the beginning of the month. Anyway, Shandong Unicom didn't.

Unicom's letter service is divided into two types: 1. Unicom is convinced of the communication fee. 2 Unicom letter business information fee.

This is not a required service. 1 is the uplink communication fee charged for customizing, canceling or ordering certain services through SMS, and each item is 1 cent. 2 is the information fee generated by customizing or ordering certain services. This fee is divided into monthly or on-demand categories, and must be collected every month. Unless cancelled, the on-demand service will not generate this fee as long as it is not clicked. Generally speaking, there are some items in the built-in menu of the mobile phone, and you will incur such expenses after clicking. For specific consultation, I suggest you call customer service.