Can't send text messages to iPhone?

I have a Samsung Intensity II, and my friend has an iPhone. When I send him a message, it says it was delivered successfully, but he never gets it. When he tries to send a message to me, he gets a message that says "message blocked" and I never get the message. What should I do? I could text him just fine two days ago…

Reset your iPhone. Have a try.

  • Why can't i send or receive text messages? I have an Iphone 3Gs, and just recently I have not been able to send or receive text messages from one contact. When I try sending a message it says "received" but when we talk through facebook or anything else they inform me that they never got the message, and its the same with their phone, I never get the messages. Its becoming a big hassle and I just want the problem fixed. Can anyone help me out?
  • Why can't I send photos in text messages on my iphone 5s? I can't get any photos to send from my messages unless it's using imessage or i have cellular data on. I'm connected to Wi-Fi and it still doesn't work. On my old basic phone I could send pictures with just service and I have the same carrier.
  • My iPhone 4 receives and sends text messages but can't send or receive photos? Barely bought a new iPhone 4, put my sim card into it and the iphone won't let me receive or send picture texts. I can send message texts and receive them, but not picture ones. It keeps giving me an error (red exclamation point) on by my picture. Tried all your suggestions. Still doesn't work and yes I can attach to emails and stuff but just can't text photos.
  • I have a gevey sim unlocked iphone 4S t-mobile and can't send text messages? I see that this question has been asked but no one has given an answer that worked for me. I have hard reset it and turned on data cellular settings but neither one worked. Nothing is wrong with the sim card, the phone, or the service. Any suggestions?