If the ticket bought on the mobile phone 12306 is refunded, will there be a SMS notification 12306?

Yes, passengers who have not taken out their paper train tickets can apply for a refund in official website no later than 2 hours before departure; Passengers who take out paper train tickets can only go to the train station window and carry valid certificates such as ID cards consistent with the tickets for refund. Sales outlets cannot handle refund and change. Refund fee will not be charged if the ticket is refunded more than 0/5 days (excluding) before driving; More than 48 hours (excluding) before departure, you can change to other trains during the pre-sale period; Within 48 hours before driving, you can change other trains before driving, or you can change other trains between 24:00 on the day of the ticket date after driving, without changing the ticket for the next day or after the ticket date; After driving, the train ticket cannot be refunded, but passengers can still change to other trains on the same day, but they can only change their tickets at the ticket issuing station. Changed tickets are non-refundable. If you can't change your ticket or miss the train after the change, it can only be invalidated.