April 17, 2012, 6:16 PM — Here's how you can forward a text message to another person on your iPhone.
1. Open the text message you want to forward.
2. Tap on the Edit button.
3. Tap the message you are going to forward and you'll see a red checkbox appear on the left of it.
4. Tap the Forward button on the bottom right of your iPhone's screen.
5. Add the recipient of your forwarded message and tap Send.
For more, see the original article at the link below.
How to Forward a Text Message on iPhone | OS X Daily