iMessage is only between iPhones that use iOS 5. If the send button is green, it is an SMS and uses your text plan no matter if you are on wifi or not. If the send button is blue, you are using iMessage and it will use your data plan no matter if you are on wifi or 3G. You can remember what service your text is using this way blue=iMessage/data plan green=text message/text plan.
Alice
Sent from my iPad 2
On Jan 28, 2012, at 11:39 PM, Ellen <itasara@rochester.rr.com> wrote:
> <<imessage is an Apple message system that sends messages between iPhones
> and iPads as data. They do not count against your SMS messages. I message
> will work over WiFi when you do not have a cell signal. When you send a
> message, SMS will be green and iMessage will be blue.>>
>
> SMS is sent as a "Short Message Service" text, using your text plan.
>
> iMessage is sent as data (140 characters = 140 bytes) using your data plan.
>
> Thanks for the information. I didn't know that. I have unlimited text so I I may not have noticed it, although I did notice the change of colors and wondered where they came from.. Has this difference been going on a long time?
>
> In other words, let me see if I get this: It is still confusing to me.
> If I use WIFI, I am using SMS is that correct?
> Even if I use WIFI, but I'm texting a non apple user is it still SMS? or is it I message.
> If one of my family members is on my contract with AT&T but uses an Android phone, are our messages
> not SMS? (I suppose it doesn't matter if we have unlimited family text, but I'm still wondering.)
> If I am using the G3 network it becomes Imessage, is that correct and uses up the data plan?
> If I am using the G3 network when I am out of the house, but am texting to an apple user, is it still sms or is it imessage?
>
> How many people understand this? Was it announced somewhere? When did this differentiation in texting start?
> This is as easy to understand as my phone bill or cable bill. How do we know really what we are paying for?
>
> Ellen
>
[Non-text portions of this message have been removed]
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