Good Evening/ Good Morning! I have thrown this question out to a couple of forums and a few random people, but I have not gotten ANY response?!?!

I'm using an Iphone 4S - IOS6 and an Iphone 5 - IOS6 and I have group messaging turned OFF in my Message Settings on both, but I can choose a recipient for a new text - then hit the blue + sign and choose another + another + another...etc.* Everyone on the list receives the text --> iphone users show the group text icon when they receive it.* If someone replies to the group message, everyone included in the original list receives the reply --> good to go.
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So what is the actual purpose of turning the setting on or off??** When it's turned on, you still have to create group messages in the same manner as above - there does not seem to be ANY difference?

Thanks!
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