How is it that Xiaomi 3 mobile phone always sends messages of 603 and 609 to China Mobile automatically?

The reason why the inquiry message is automatically sent to China Mobile may be that Xiaomi started the flow control, or used other software to inquire the telephone bill or calibrate the flow.

This function is set by Xiaomi to ensure the safety of user traffic charges, and there will be no extra charge. If you need to close it, the method is as follows:

1, drop down the notification bar to find the flow calibration. Click to enter.

2. Click the gear button in the upper right corner.

3. Turn off the flow monitoring button.