Is it true that China Mobile called to send short messages for free?

Because the source of the number can't be confirmed, Xiaoxiao suggests that you don't trust other unfamiliar outbound number information except 10086 easily, and don't disclose personal information such as bank cards and passwords, so as to avoid personal property loss or information disclosure ~ If you need to participate in the activity, you can call local 10086 to confirm the authenticity of the activity content.