Iphone, or Service provider?

So ever since i got my iphone i could not send pictures to othere non-iphone devices. My old phone before i could send picture texts, what happens is the little exclamation mark pops up and says 'unable to send', Is it my iphone or Verizon Wireless, My service provider?

Probably not your network. In email or text or both? You don't say. If you mean MMS, do you have it turned on? If not, turn it on, if it's on then turn it off, restart phone, then back on.
Best luck.
http://techchannel.radioshack.com/enable-mms-messaging-iphone-1151.html