My iphone 4 won't send imessages & i'm connected to Wi-Fi?

My texting for my phone is turned off but the imessage should work with Wi-Fi and it was yesterday and then all of a sudden it won't let me send anything to anybody even when i'm connected to Wi-Fi. It says not delivered but it lets me reply if they text me first but only if i respond right away

Hold the Home Button and Power button for about 10 seconds or until you see the Apple Logo then let go. That's called a hard reset. That should fix your problem.

  • Wi-Fi Connected - but no internet on devices connected? Hi, The Problem is - i set up a wireless network today for my Iphone 5 and my blackberry, from my main desktop at home, and all went well and Both are connected to it, as well as my laptop. But now whenever i try using the internet on these devices ( iphone etc ) it does not work, although the main desktops internet is working… Can anyone help me? I'm using WINDOWS 7.
  • Why won't my iPhone send iMessages? I have an iPhone 4S and my friend has the 5. She kept the same sim, so when she got her 5, the old messages from her blackberry weren't deleted. But now, our messages aren't sent through iMessage and its really annoying. Any ideas how this could be put right? All my other friends that I message are sent on iMessage, just not her.
  • Why won't my iPhone send iMessages to other iPhones? I can use iMessage on my iphone4 with no problems at all to iPods, but not to my partners iphone4, it always defaults to SMS. Its frustrating, because we live in an area with poor mobile coverage, so if I need to message him urgently, iMessage in theory should be the best way of doing it. Does anyone know how I can alter this please?
  • Why won't my iPhone send iMessages? - 1 So ever since I updated my iPhone 4s to iOS7, I have only been able to send iMessages to a select few people. I'm doing an exchange this year, so I need to text my exchange student, who lives in Spain. It costs $0.25 per text, which adds up and I liked being able to do it for free with iMessage. I used to be able to use iMessage with her. I tried Resetting my Network Connection already, but it doesn't work. What can I do?