Who sent the message from the bank?

This is the bank SMS notification service.

As long as there is any change (deposit or withdrawal) in the account,

I'll text you right away.

It was free at first.

Many banks are charging fees now. (There is no such thing as a free lunch), maybe 3 yuan a month. One year in 36 yuan.

If you are not a big account, the security of the account doesn't matter. If you think the charge is high and uneconomical, you can cancel it at the bank.

If you have a large account, account security is very important. This charge is nothing, don't cancel it.