I apologize if I am posting in the incorrect forum. I have also done a search for this problem on this site and havent found a definite answer. I am on the AT&T network and I purchased a Skyrocket two days ago (went from an iPhone 4). I have two contacts that I can send text messages to and they receive them but I don't receive their responses. Went back to store yesterday and changed out sim card, reset to factory settings, called AT&T and no luck. I went on to my Gmail account and found these two contacts under the group My Contacts, along with all the AT&T numbers. I moved these two contacts to the group Unassigned where the rest of my contacts are. Still no luck. I know these two contacts have iPhones and we did use iMessage for texting. This problem is becoming very frustrating and have no idea why its these two contacts. All my other contacts so far I can send and receive just fine. Any help would be greatly appreciated!