Iphone not sending messages to new numbers?

I got a few people's number and texted their phones right after so they could have mine, but it does not send it sends them as a text message when they have iphones but they aren't receiving them I signed in and out of imessage and FaceTime now it won't send at all it just says not delivered

I would say to check your internet connection. If its multiple people then it probably isn't the other's internet. U

Under settings > Messages make sure imessage is turned on. Then go to the Send & Receive menu under messages and make sure everything is correct there. Let me know if any of it works.

Not good.

  • 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 is my iPhone5 sending some messages as iMessage and others as Text Messages? I understand that messages are sent as Text Messages when there's no signal or poor Wi-Fi connection. However, I'm successfully texting some people using iMessage but others (still iPhone users) as Text messages. The other person will send iMessages and then my responses will be sent as green Text Messages.
  • Why is my iphone not sending messages? I'm trying to send texts to my cousin who has an iphone and has the same carrier.every time i try to text them it tries sending the message and when it gets to the end of the status bar thing the message just disappears like it was never there. and it only does this for this one person. why won't it send?
  • Traveling internationally, iPhone is sending iMessages but not text messages? I'm from America but I'm living in the UK for a while. My iPhone will send iMessages with or without Wi-Fi, but will never send regular texts to android phones. This was happening when I had my American SIM card as well as my new UK SIM card. Any suggestions?