Adding another person to a message string already going. At one time you can add another person. Now that feature is gone.

Lyn Haycock wrote:

Where is the ‘add another person’ to a message string already going?

The feature is not gone, read here the requirements Add and remove people in group text messages on your iPhone, iPad, or iPod touch - Apple Support

Lyn Haycock wrote:

Thanks for the info. I did not realize if everyone does not have an iPhone the feature goes away.

You're welcome.