Mobile phone authentication 12306. Why can't I send a text message to 12306?

1, network connection problems, etc. Landed in official website 12306. After logging in successfully, click the user name at the top of the page to enter "My 12306". Click on the left to enter "mobile phone verification". If the "mobile phone verification" is not completed, a prompt will pop up.

2. Reason: The dual card used by the user's mobile phone and the mobile phone card used for texting are wrong. Please check whether the mobile phone number that needs to be registered is the same as the mobile phone number that sent the verification code. Network problems, try to replace a stable network. 12306APP, restart 12306 or uninstall and reinstall 12306.

Please check whether the mailbox is full first. If yes, please delete some information. If you still can't get it after deleting it, you can change the machine or card to see if it is a hardware factor; After eliminating the above reasons, you can try to test whether it can be received in other places to see if it is the reason for the weak local signal.

4. It may be caused by the following circumstances: SMS or verification code cannot be received for the following reasons: First, check whether the mailbox is full. If it is full, please delete some information. If you still can't get it after deleting it, you can change the machine or card to see if it is a hardware factor.

5. The cell phone signal is poor, so it is recommended to try another area with good signal. Short message center failure or maintenance, you can try another time period.