12306 will remind you to get on the bus?

After purchasing the train ticket, a SMS reminder will be sent to the reserved mobile phone number on 12306 APP three hours before driving, but you will not be reminded after getting on the bus, only a message reminding you to get on the bus.

If you change it to WeChat to receive the information on 12306APP, then you will not send SMS, but push it to WeChat, and WeChat will temporarily remind you of the information in the service notice.