Four of the five on our Family Plan use stock Verizon Message. I'm on that Family Plan but use Message+. If a Family Plan member sends a Group Text, my REPLY arrives to them as an individual text from me - not a Group response. They think I've left the group to reply. What setting needs to be changed on my Message+ or their stock Message so my responses to group show up on their Android Verizon devices as a Group response?
