How does China Mobile check the phone bill?

Taking SMS as an example, the query method is as follows:

1. Open the SMS. If there is "China Mobile" in the list, click directly to enter. If not, click "+"in the lower right corner to create a new message.

2. For the newly created short message, the receiver should input "10086" and "cxhf" for the content, and click Send.

3. After the message is sent, you will receive feedback from the mobile phone, indicating that the phone bill has been consumed this month.

4. If you want to check the balance of your mobile phone, enter "ye" to send, and you can receive the phone bill balance of your mobile phone number.