Why can't I add someone to a group chat on iMessage?
You cannot add people to a group message if one or more of the people does not have an iPhone. You also cannot add people to an already existing iMessage group chat if they do not have an iPhone. In this case, one of the people that was in the group chat doesn't have an iPhone.Aug 23, 2016
Why can't I add someone to a group text on iPhone?
If you want to add someone to a group message — but they're using a non-Apple device — you need to create a new group SMS/MMS message because they can't be added to a group message using iMessage. You can't add someone to a messages conversation that you're already having with just one other person.Sep 20, 2021
How do you add someone to an existing group text?
Open the Messages app then go to the group chat you want to add people to. Tap the i icon in the top right corner. Tap Add Contact. In the Add: field, start typing and either select autocomplete suggestions or type in a full phone number or Apple ID.Feb 15, 2022