Joke Collection Website - Public benefit messages - Is it safe for Unicom to send short messages in groups?

Is it safe for Unicom to send short messages in groups?

This is absolutely wrong. Don't trust messages sent by any other SMS operators except Unicom. If you reply to a similar text message, you may have inadvertently customized something, and you will deduct a lot of money every month for no reason. Or it will continue to send you messages, usually one yuan.

This is a typical fraud.