Hey everyone. I have the OFFICIAL unlocked iPhone 4 from Apple. Bought it in January for a late Christmas present and has been working wonderfully (MMS and all) w/ the T-Mobile guide that was posted by another fantastic member here. However, NOW I am having trouble with sending pictures to people who don't use iMessage. It was fine two weeks ago! Now I try pushing the send button like 10 times and the red exclamation mark pops up every time. I did update it to the new iOS to 5.1. Is that why? This is EXTREMELY irritating. Thanks for any help!