My iPhone4s won't let me send pictures

I have the iPhone 4s, (AT&T is the carrier) I have done it all (that I know of). I have turned my phone on and off. Data roaming on and off. Instead of hitting "resend" or whatever it says, I try and start from the beginning. I've checked to see if my phone is up to date (it is). I've turned Wi-Fi on and off. I've never had this trouble before. It was going fine up until a few days ago. I can send in iMessage, but not in regular messaging.

I'm having the same problem as of 8-16-12 and after calling the local corporate AT&T store, the rep said to come in and try a sim card reset or exchange and see if that will fix it, otherwise if you can find an apple store i'd just go there to the Genius Bar and see if they can fix it. I found that the full restore without using your back up and just contacts and photos still doesn't really fix it and people have had the problem return in about 3 hours or so.

  • Why won't my iPhone 4s let me send picture messages? It gives me the option to send pictures and will let me choose a photo but when i press sent the little bar at the top fills half way then stops and a little red exclamation mark comes up next to the picture saying not delivered. Is there something wrong with the phone or can a change it my self in the settings?
  • Why won't it let me send iMessages? Ok so I updated to iOS 6.0.1 and the person I'm tryin to iMessage is on IOS 6.0.1 on iPhone 4S I'm on iPhone 4S to it won't let me send a iMessage and there down as an iPhone as well please help!
  • Why doesn't my Iphone let me send pictures to people without an Iphone? I can send pictures through imessage, but not through a normal text message. Even when I try to send pictures as a normal text to people with iphones, I still can't send it. I have unlimited texting, and my settings say MMS is on. It doesn't give me any error messages, it just shows up with a red exclamation point and under the picture it says "not delivered." Anyone know why?
  • What do i do when my iPhone 4 won't let me send i message or text messages? I was spamming my friend with emoji emotions when all the sudden my phone freezes until i pressed the home button. But i tried to go back to message and it won't let me. It tells me i hot 3 messges from my friend but i can't open them.