wherever there is AT&T coverage and if you have a AT&T contract. unlocked iPhones can't do nearly as much and you'd be better off with something else.
can i buy a iPhone in Korea and use it in south-Africa
You actually cannot buy a prepaid iPhone. You need a contract with AT&T. Otherwise, you could try an iPhone clone, perhaps a Hiphone or something from iphone-clone.com....or you could just use a free program like http://softunlock.com to unlock your iPhone and then just use any pre-paid SIM.Good luck!
no you cannot use ipod and iphone apps on itunes, but you can buy the apps on itunes and put them on your ipod and iphone
No
yes they can. an iphone is quad band meaning most counties you will be able to use an iphone.
iPhone 4s is easier to use, but it depends on which Htc, I would say the iPhone 4s
You can use the AT&T iPhone coupon code if you plan to purchase an iPhone. You can not use it if you plan to buy another phone.
The iphone 4s desigh as same as iphone 4, so you needn't worry about that ,my girl friend's iphone 4s use my iphone 4 case (buy form 708buy.com) all the time, I prove the iphone 4 case is fit to 4s
Yes, you can buy international iPhone's version (a iPhone with out Internet) in eBay or amazon, some iPhone that sell outside U.S, is international iPhone' version. You can use it with any network that you like.
Yes you can buy private medical insurance in Canada. Most of the time people buy this for traveling outside of Canada but you can use it within Canada as well.
No, I don't use that kind of software. I just buy some iPhone accessories on this website: http://www.dinodirect.com/iPhone-Accessories/
No