1. Send messages to a group (iMessage and MMS):
   
   Tap the compose icon.
   
2. Enter multiple recipients.
   
3. Group messaging settings:
   
   From the Home screen, Go to Settings.
   Note: With MMS, group messaging must also be turned on in Settings > Messages, and replies are sent only to you, they aren't copied to the other people in the group.
   
4. Scroll to, then tap Messages.
   
5. Tap the Group Messaging switch to turn on or off.