Excuse me, how to open the SMS reminder of CCB?

Today, I specially went to China Construction Bank to open this SMS reminder service, and I also took the number to queue up. I met too many people and went to another bank. People directly told me to use my mobile phone to open it. I sent a message directly: KT# plus the last four digits of the bank card, and the message was opened at 95533, which will take effect next month.