How to check the internet traffic of mobile phones in Jinzhou, Liaoning Province? Is there a charge?

You can call customer service at 186, and then ask her about the traffic usage. You can also ask her what SMS to send to check the traffic, and then you can check it according to what she said. As for the charge, unless you have a mobile phone card with a free traffic package, there is no charge for the traffic usage within the package. If it exceeds a penny and a kilobyte, if there is no free traffic package, you will have to pay the same price. Thank you.