i got some advice for whoever planning to buy iphone or ipad from oversea.
since every country might get different model/product code.
there is something you guys need to know.
apple make the product to comply the law or rules and regulation for every single country.
some are hardware and some are software even packaging are different, not every iphone/ipad are the same
example:-
japan - iphone and ipad which selling in japan are unable to mute the photo capture sound ("ka-cha" sound) no matter you mute your phone or not and no single setting to mute that sound too. not just only iphone actually most of the camera and phone selling in japan have to comply this policy.
Kingdom of saudi arabia - remember few years ago, i got a customer which purchasing her ipad from Dubai. but she found out the facetime feature are not install on her ipad. and facetime is not able to download from app store since it was part of the ios.
we tried to restore her ipad to latest os we had that time, but the ios detect her ipad is ksa model so the facetime still not able to show in her ipad.
you can search on google for "missing facetime app"
hope this can help.
this is a good point. safe to say, you'll get stuck with these issues if you decide to import. (well, unless you jailbreak; but that's another can of worms)