iPad air with international warrantee?

The warranty on the WiFI+Cellular model iPad is absolutely not international. The warranty will be honored only in the country in which the iPad has been sold. The warranty on a WiFi-only iPad may be honored in other countries, but I've seen people state that the warranty has been refused when not in the country of purchase, so I would suggest you not count on it and buy your iPad in your home country.

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Regards.

Warranty isn't international - from http://www.apple.com/legal/warranty/products/ipad-english-a.html :

Apple may restrict warranty service for iPhone and iPad to the country where Apple or its Authorized Distributors originally sold the device.

The Apple Communities are for users to help other users. If you want to talk with Apple employees, you need to call an Apple Store, in countries where those are available, or Apple Support:

http://support.apple.com/kb/HE57

our iStudio told me that every Apple devices are international warrantee except iPhone!!!

iStudio was wrong. Cellular-model iPads, just as with iPhones, differ from country to country and hence are supported by Apple only in the country in which Apple sold the iPad. WiFi iPads, again, may get international support, but as I said, I would suggest you not presume that to be the case.

Regards.