Tips:
Bill SMS reminder service is opened door-to-door, and only the main cardholder can sign the contract. After opening, all the main credit cards of Bank of Communications will automatically open the bill SMS reminder service, and the service will be automatically renewed after the expiration, so you don't need to sign again.
Platinum credit card and business card automatically load bill SMS reminder service; Quasi-credit cards and supplementary cards cannot open bill SMS reminder service.