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Group messaging is not working on a brand new iOS 5.1.1 iPhone 4S for AT&T
The following options are on under settings > messages :
iMessage
Send as mms
Group messaging
Mms messaging
Additionally, a new sim card is being used. Friends can receive and send group messages within the chat. I can also send messages in the chat and they will see the message but I can't see anything they send.
I am switching from a 3GS that had sim card issues so I have a new sim card in this phone.
Any advice as to what is going on? Thanks
CORRECTION:
Mms is not working despite it being on. Friends ARE NOT receiving group messages and I can't send mms to anyone individually.
Sorry for the confusion. Confused some details between the old 3GS and this 4S

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