My New IPhone isn't sending messages?

I just got a new iPhone 4s today, and some of the text messages arent being delivered properly. I have good service and there's no initial sending error, the people I'm texting just aren't receiving the messages. It has so far worked with two numbers out of around ten. Those two numbers are both long distance. No one local is getting my texts. Any advice because I paid a lot for this phone and plan, and it's starting to piss me off.

It has to be down to number error
double check that their the numbers are
correct

  • Why isn't my new iphone 4s sending messages? I have had my iphone for about 2 and a half weeks and ever since i bought it it hasn't sent messages right… I have tried to reset it and i looked at imessage and made sure everything was right on that and it still won't send messages half the time… Plus i can't get incoming calls sometimes i will have to call the person thats trying to call me… Should i take it back to c spire or what?
  • Why isn't my iPhone sending text message? So my iPhone won't send TEXT messages. IMessage works. Other people can send me text messages but whenever I try to send a message, it says "message failed to send" or something like that. I have lycamobile carrier and nothing like this has ever happened. I have restarted my phone and all of that. I changed nothing in settings.
  • Why isn't my Iphone sending picture messages? When i try and send picture messages my iphone says message send failure? Also, 3g isn't working.
  • Why isn't my iPhone 5 not receiving or sending texts to andriod phones? I just recently got an iPhone 5 (regular. Not 5s or 5c). I haven't updated to iOS7 yet but ever since I've gotten this phone it hasn't received or sent text messages to an android phone. I haven't tried calling yet so I'm not sure about that yet.