iMessage questions......
So a couple of questions about iMessage.
I understand the basic difference between iMessage and a normal SMS, but is there a way to toggle between the two?
Like for example, a friend of mine is going on holiday next week, so her data will be switched off, unless she gets Wifi somewhere. So if I do want to text her, i.e. for her to get the message straight away rather than wait until she gets Wifi, how do I do that, apart from physically switching off iMessage before sending the message? We tried this morning, she switched her internet off on her phone, but I could still just iMessage her.
Also, how do I understand the Send as SMS option, is that just to say that if I don't have internet it'll send the message as SMS, or does that tie in with the above, i.e. if it can't get delivered as an iMessage after a certain amount of time it'll send it as an SMS? Because that would be annoying as you can't really keep track of how many SMS you've sent and how many have gone through as iMessages. Especially when you have contacts abroad, who you can contact for free with iMessage, but if it then goes over to SMS if it can't deliver, it'll cost a lot of money.
iPhone 4