IPhone 4 won't send picture messages?

I just got my iPhone 4, and I turned the MMS on. When I try to send a picture (to a normal phone or another iPhone), it tried to send, and then says "message sending failed." Anyone know how I can fix this?

Turn on mobile data

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  • Why won't my iPhone send picture messages? I have an iPhone 4 and every time I try to send pictures it gets to where the sent bar is almost full, then it just stops and won't send. What do I do? I've tried restarting my phone and it didn't do anything. It is on my plan though. I just sent a picture message yesterday but now it's f*cking up.
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