Its iChat, it's free, slightly similar to bbm, though I still prefer bbm, it tells you when they are typing a message and when your message has been delivered. I might tell you when they have read your message, NOT SURE. It only works if they have an iPhone too.
iMessage is something you can turn on and off in your settings on an Apple iPhone 4S phone. for someone that does not have unlimited texts by turning this feature on when somebody else has imessage you will not get charged for the text both phones must have this feature turned on you can tell when this is the case because the message will show up blue instead of green
Well if it has to do with iMessage, then how come my 3GS switched from green to blue, AND from a female voice to a male (in speak auto-text)? It happened while I was texting with someone who doesn't even have a smart phone, suddenly and without warning... it just happened. And this was weeks after I upgraded to iOS 5.1. Just up and switched for no apparent reason! I can get used to the blue, but I really don't like the deep, male, British voice, and he seems to be associated with the blue bubbles. I want the American female voice back, and I think if I can get the green bubbles back, I'll have her back as well. But I've looked throughout my settings and cannot for the life of me find the cause of this. :(
I'm beginning to think I'm the only sucker with 4!! iMessage in blue doesn't deliver, regardless of the recipient having an iPhone or not, it simply doesn't deliver messages. I have to press and hold the blue bubble, then select 'Send as text message' to change it to green.
Only info around is for 4s!!!
I loved my iPhone until this stupid ios7 showed up and ruined it!!!