I've been researching this for 2 hours now & can't figure it out. I found posts that indicated the 3G iphone *can* do the same msg to multiple recipients, but when I followed the directions they didn't work (it said click the blue & white plus sign multiple times, once for each person. But after the first time I tapped it, the first person's name appeared and the plus was gone).
I am looking for directions, 3rd party app, anything! Please help - Jen-isis