My mobile phone card of Guangxi Mobile has a phone bill, and the number of the SMS center is correct. I can send messages, but I can't get any messages. What happened?

If you can send SMS, it proves that the SMS function and the number of SMS center are correct. If you can't receive the SMS, you can check whether the mobile phone has SMS set by software such as security housekeeper. If not, you can try putting your mobile phone card in another mobile phone. If you can receive it, it's a cell phone problem. If you can't get it, it's the card. You can check whether the data is normal after going to the local business hall or customer service.