I recently purchased a Galaxy S8 with T-Mobile service, and the group messaging options leave a bit to be desired. I located the option to disable group messaging under Advanced Settings, which allows me to send a message to multiple contacts individually, but it also removes my ability to receive group messages.
I would like to have the ability to choose whether a message is a group message or multiple individual messages while receiving group messages as normal.
I used to have a Note 4 that had an option on the compose screen to toggle group messaging at will - a little checkbox above the keyboard entry. I would love to have that feature returned!