How to check the flow direction of electrical signals?

There are many ways to query the traffic of telecom mobile phone number. Here are some ways to query the usage of telecom traffic:

1, you can edit the short message traffic query code 108 1 send 100 1 to query traffic usage.

2. Download and install the handheld business hall of China Telecom, log in the mobile phone number, and you can check your own traffic surplus on the home page.