This is a follow up to my comment about 1/2 an hour ago.. If moderators want to delete the original comment, that is fine, too. But if not, please add this to it. We got my group texting working! I can have both imessaging and wifi on, and as long as data is on, the group messaging works. There was an error in the MMSC setting. I fixed that, restarted my phone, turned imessaging off and back on, and it group texting with non-iphones was a go!