Will mass texting by banks cause complaints?

Do you mean "can banks send text messages in groups?" Banks can send text messages in groups, and it is illegal to send text messages in groups only under the following circumstances:

1. The relevant business qualification certificate has not been obtained: mass short messages belong to value-added telecommunications services, and the business license of value-added telecommunications services should be obtained. No organization or individual may engage in telecommunications business without obtaining a telecommunications business license.

2. SMS fraud: sending a large number of "trap" text messages to users to defraud property is suspected of breaking the law.

3. Spreading bad information: Some criminals use mass short messages to spread bad information such as gambling and drugs, which not only seriously harms people's health, but also hinders social development.