How to forward a text message when it is received by a mobile phone?

It cannot be forwarded automatically, and it needs to be forwarded manually. The functions of the mobile phone itself can be forwarded manually. There is no corresponding software and hardware for the time being. If there is demand, relevant departments will study and develop this function.

Non-smart phones have forwarding options directly in the menu when you read short messages. If you fill in the other party's number, you can forward it.

After the smartphone opens the SMS content, long press the SMS content, and forwarding will appear in the pop-up menu. Enter the number to forward, and then press Send to forward successfully.