What kind of bank card SMS notification is free?

Generally, local banks or small banks, as far as I know, their SMS notifications are free. Now WeChat banking and mobile banking are very convenient, and the requirement of SMS notification can be ignored. When you handle or consult, you can find out whether there is a charge for SMS notification. I use mobile banking and WeChat banking, which is very convenient. They don't need SMS notifications, or they don't read SMS notifications at all.