Iphone imessage on Wi-Fi is using my text up?

I'm on my Wi-Fi using imessage and it uses up my text.

That isn't good… Maybe you could try having your phone on "Airplane Mode" and then turning on Wi-Fi to send iMessages. That's what I do when I'm in a place that my phone is searching for service, but I still have Wi-Fi so I can send iMessages.

  • Why is my iPod touch using my iPhone's phone number for iMessage? I don't know why it started doing it but my iPod says it's using my email and phone number on iMessage but I don't get why or how that's even possible. Please explain this.
  • IPhone can't send iMessage to iPod touch user with iMessage? At random times, whenever I try to iMessage my friend who has just a iPod Touch, where you type in the message will say "Text Message" instead of "iMessage." is there a way to fix this so it will always send as a iMessage instead of Text?
  • IMessage won't send to another iPhone with iMessage? So my iMessage works to all my friends that have iMessage except one friend in particular. He has iMessage on his phone and can iMessage all his friends but he can't iMessage me. We both have iMessage turned on on our phones but they simply will not iMessage each other.
  • How to send an SMS instead of iMessage, without turning iMessage off? Is there any way to send SMS's by default to one certain contact whom has an iPhone, while leaving iMessage on? My friend doesn't receive my iMessages even though he has an iPhone so I've been turning iMessage off to text him regularly then turning it back on because I contact others using iMessage. But I just realized it charges me a little bit every time I turn iMessage back on. So is there a way to send an SMS instead of and iMessage without turning it on and off?