So my brother, sister, and I have a group chat. All of us are iphone owners. My brother uses iMessage. However, my sister disabled her iMessage. Now the problem is that she can send a group chat to us as a text message but I couldn't reply to the group at all. Even if I reply as a text message. I don't get it, i know it wouldn't work as an iMessage because she disabled it but shouldn't send as text message go thru? I tried sending to another group chat with android and iPhone owners and it works fine. The only problem is when I send a group chat to iphone owners who doesn't have iMessage enabled. Help this is making me insane.