12306 how to complete mobile phone verification?

Start the 12306 client and enter the "My 12306" column in the lower right corner?

Send SMS 999 to 12306 by using the mobile phone that needs verification according to the official prompt, then fill in the received SMS verification code in the corresponding column and press "Submit" for verification.

After successful verification, you will receive the following prompt:

12306 A mobile phone number is verified multiple times.

A mobile phone number can only verify one account. After multiple verifications, you will receive the following repeated verification warning: