((Per T-Mobile's Help Forum)) Send a group message
To write and send messages to a group, follow these steps:
- From the start screen, tap People.
- If necessary, touch the screen and slide right to display the together screen.
- Scroll down to Groups, then select the group you want to send a message to.
- Tap text.
- Enter your message.
- When finished, tap the Send icon
This method sends individual texts to each person.
SO, if you are trying to send a text to multiple people, say to plan a movie night, others in the group won't get to see responses you receive from others.