I updated my husbands iP4 with OS 5 and I have a new iP4S neither one gets any sound, badge, notification or any indication that an imessage text has come in. When my son sends a regular text message all that works. We have notifications turned on in settings.
I also updated my iPad1 to OS 5 and the notifications work for iMessage there just not on the iPhones.
I also updated my iPad1 to OS 5 and the notifications work for iMessage there just not on the iPhones.