12306 Why do you always jump out? Please resend the mail.

Cell phone problem. Try sending text messages on different mobile phones to see if you can't receive them. The cell phone signal is very poor. Try somewhere else. Error in SMS function. Check whether the SMS function is normal. Sim card problem.

An exclamation point when a mobile phone sends a text message indicates that the message failed to be sent. It is suggested to click the exclamation point and send it again. Generally, the reason for sending failure is that the cell phone signal is not good, and the cell phone is in arrears, which may be due to insufficient memory space. The same is true for Android phones. A red exclamation mark appears on the short message, indicating that the short message failed to be sent.

This indicates that there may be a problem with the network. Please try again because there is no certificate. The solution is: open the website of 12306, with a top message on the home page, and click "root certificate" to download the certificate file. Download the compressed package, open it directly, and double-click the file "srca.cer".

One: The reason why 12306 always jumps out and logs in again when booking tickets. First of all, you have to check whether the ticketing software is installed on the computer. For passengers who have not installed the ticketing software, it is unfair to buy tickets, so 12306 stipulates that passengers who have installed the ticketing software should wait again when purchasing tickets.