Iphone message send failure, but it actually sends? And other problems?

When ever I go out of Wi-Fi service I have to send a few messages before it will switch over to texting. I have to send it as an imessage and then click on the message and press 'send as text'. That is very annoying. How do I stop it?
And my main problem: When I send texts it keeps saying 'message send failure' after a few minutes, but I know that the messages actually have sent because I get replies to them. How do I stop it from saying 'message send failure'?

And my final problem: My texts are sending twice. On my phone everything looks fine, but my friends keep getting two of the exact same text from me.

Consult the nearest Apple Store and do get Leo Privacy Guard, it can hide specific images and videos that you want to hide and also it locks applications so you can get a two way protection in your device.

  • What does message send failure mean on iPhone? I sent this person a iMessage and it didn't go through and said "message send failure". I've texted this person before and had no problems but now it's saying this. The person I'm texting also has an iPhone. What does "message send failure" mean? Could it mean that there phone is off?
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  • My IPhone 3g had been telling me 'Message Send Failure? When i try sending a photo, it shows "message send failure" i've sent photos before and this is the first time its showed this sign. Is there anything i can do to fix this?
  • Message send failure on iPhone 5? Every time I try to send a picture through iMessage I get "message send failure". But all of the pictures I send go through and get delivered to the receiver. Yet I keep getting that message even though it sent. Does anyone know how to fix this? It's been going on for a couple of days now.