Why did another person receive the message I sent to others?

The message you sent to others was also received by another person, which is probably related to the phone number forwarding function set by the other party. For example, after this call transfer function is set, the call to A will be transferred to the mobile phone in this currency. So the text message you sent to A will also be transferred to the avoided mobile phone. So that others will also receive this message. Of course, in addition to this phone transfer function, there are many Trojan viruses in today's technology. The existence of these Trojan viruses can also copy a person's mobile phone and receive his short messages and messages at the same time.