I am a new Sprint subscriber. I am trying to send a group text message using the native Android messaging app on an LG G6. I can RECEIVE messages from this group, but I cannot SEND messages to this group (i.e., reply to a received message or a new message that I compose), or to any group - I've tested it on other groups too. I can send text messages to each person in the group individually, but not a single message to the entire group at once. Tried turning phone on and off and doing the other things Sprint recommends with no luck.
Any help or suggestions would be appreciated.
I ended up calling my local, corporate Sprint store. The phone needed to be re-initialized on the Sprint network (even though voice, data, and all messaging, except sending a group text, worked fine). To do this I dialed # # 72786 #. The phone restarted and was set up again on the Sprint network. Once the process completed, about 2 or 3 minutes, everything worked fine.