3G usage

[NightHawk]

OK, maybe a dumb question, but I have to ask....

I have wifi at home, no problem, but at work I have to use 3G....
my question is, when I turn the pad on at work, lets say on ibooks, am I using my assigned (2GB)amout of 3G? I know if I'm on the forum or eBay I will be, but if I'm on a dowloaded app, like ibooks, will I be using 3G time?
If so, is there a way to temp turn it off? I don't want to cancel the 3G, just turn it off...

sorry if this is a silly question, I did a search but didn't find what I needed...

Thanks All.

 

[SBHOKC]

I believe that if you are just reading in iBooks you are reading an already downloaded book. Turn off your 3G and see if you can still read your book.

 

[emm]

Yes. In settings click airplane mode at the top to turn off internet while you're reading books or doing other activities you don't need the internet for.

 

[NightHawk]

Thanks
Simple right? I knew it would a silly question.
Thank again