How to buy a train ticket for a friend through mobile phone verification?

1. Open the mobile phone application of Railway 12306.

2. Click my button at the bottom of the page to enter the page.

3. Click Witness Verification in the common function category.

4. Follow the prompts. When the mobile phone is verified, the system will send a verification message to someone else's mobile phone. You need to let others inform you of the content of the message, enter the App for verification, and it's done.

5. Check the passenger information and click the passenger on the page to enter.

6. Click Add in the upper right corner.

7. Fill in the certificate type, name, certificate number and mobile phone number in the page, and click Next to verify the passengers.