Does the mobile phone traffic balance reminder service cost money?

The mobile phone traffic balance reminder service is free.

China Mobile customers send or receive the message of 10086 for free. China Mobile provides services to customers by sending short messages through 10086, so that customers can know the usage of telephone charges and traffic in time. Mobile customers can also send short messages to 10086 to quickly and conveniently check the phone bill, get the latest preferential information, handle business and package, and so on.

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Mobile customers can also use the customer service hotline 10086 for business consultation, business acceptance, complaints and suggestions related to mobile communication.

There is no charge for China mobile users to call local 10086, and calls outside the area are charged according to the user's package rate. Call 10086 for free.

China Mobile official website-Customer Service