Under what circumstances will China Southern Airlines receive SMS notification of flight changes?

If you are a frequent visitor of China Southern Airlines, or if you buy it directly from China Southern Airlines' website, China Southern Airlines will inform the passengers directly by SMS.

If you bought it on an agent website such as Ctrip, you can also receive the information of flight cancellation as long as you set a notice on this agent website; If it is not set, you will not receive the message.

Passengers need to be informed one week in advance of normal flight cancellation, and special circumstances depend on the situation, such as sudden plane failure. However, for the cancellation of flights, airlines should have late remedial measures, give priority to follow-up flights, help passengers change their tickets and refund their tickets in full.