Why don't some banks charge for short messages? Thank you. For example, Guilin Bank does not charge.

Hello, there is no charge for bank text messages, mainly depending on whether you are a big customer of the bank or not, and whether your contribution to the bank is great or not. If it is an ordinary customer, there is a charge for this. If it is not a big customer of the bank, the bank will give it to you for free, which means that they are now free to retain more customers.