The mobile phone card can make phone calls and send text messages, but it can't connect to the network. What is the reason? Setting parameters is no problem.

Call customer service to see if the mobile data traffic is off.

This happened to me last month. I used it well, and suddenly it didn't work. I thought the card had been used for a long time, so I went to the business hall to change it, but it didn't work. I thought my mobile phone was not working, so I brushed it, but it didn't work. In the end, they all went to the after-sales store with the worst plan. As a result, after the sale, he said that he would call the customer service to ask if the network was not open. The result is really good. They even told me that they had never opened it. I really want to curse. I have used this card for more than two years. What do I use to surf the Internet? The customer service said it wouldn't open anyway.