Why don't you use the 300 SMS discount when sending text messages, but deduct the SMS information fee?

Unicom's letter service fee consists of communication fee and information service fee. The communication fee is charged when you give an order, each item is 0. 1 yuan; There is a monthly billing model for information fees, and the fees for each service are different. You can also contact manual customer service for detailed inquiry.

Unicom's 4G SMS network age upgrade plan presents domestic peer-to-peer SMS. The communication fee of Unicom in the letter needs to be charged separately, but it can't be deducted by SMS.