Why does Mobile send me a short message about the phone bill balance every day?

The mobile phone automatically corrects the phone bill. 10086 is the official number of China Mobile. He keeps sending you text messages, which is the function of smart phone to automatically correct the flow of phone bills. China Mobile is a telecom operator with the largest network scale, the largest number of customers, leading profitability and brand value, and the highest market value in the world, with a registered capital of 300 billion RMB, assets of 1.74 trillion RMB and a total of nearly 500,000 employees.