I bought a traffic card, so I can't make phone calls or send short messages. How can I check the traffic? I don't know the service password. SMS cannot be verified.

You have too many things. It's too slow to make customer service complaints. Go to the business hall and ask them to help Ding Gong solve it. If you solve it yourself, first change the phone test to see if other cards on the phone are normal, because you have to rule out the problem of the phone, and then test whether the SMS is normal. If nothing is normal, you have to call customer service to complain, which is very slow. The service password will be automatically sent to your mobile phone when you open the card. You can probably get it online, but you can't get the SMS at present, so go to the business hall. He can help you solve it right away, hoping to help you.