Q: I have an Iphone 4s.  Last night I was part of a group message.  Today, my group messaging will not work at all. I have checked settings, messages, and group messages.  All are ok.  Suggestions?

Hello kathyandjeffd,

Thank you for using Apple Support Communities. 

I see that you are having issues with a group message on your iPhone. The following article provides some basic troubleshooting for sending/receiving messages on your iOS device as well as some more specific for group messages. 

If you can‘t send or receive messages on your iPhone, iPad, or iPod touch

If this doesn't resolve the issue, then if you could provide more specific symptoms of your issue and we can go from there on the issue. 

Best regards.