You can download the "Railway12036" app through your mobile phone to check the timetable of high-speed rail. The specific steps are as follows:

1. Open the mobile app store, search for "Railway 12036", and click Install to download;

2. After downloading and installing, open the "Railway12306" app and enter the login interface;

3. After entering the APP interface, select the starting station and destination you want to travel, and choose to watch only the high-speed train or the bullet train;

4. After clicking on the ticket, you can check the time of the high-speed train and the stay time of each platform.