Why Apple is not giving international warranty for iPhone 7

Not according to the actual terms in the written warranty - https://www.apple.com/legal/warranty/

All iPad, iPhone and Apple TV warranties include the exact same clause:

IMPORTANT RESTRICTION FOR iPHONE, iPAD AND APPLE TV SERVICE.

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

Why? Because they don’t and never have offered an international warranty on iPhones or iPads. Other than that, nobody here can say anything about why Apple does what they do. We do not work for Apple, and we don’t get to sit in on their business decisions.

And you notice that clause says "may" not "does" but many people here refer to it as if it is absolute. The limitation is due to the cell radios that are in the phones and dates back to when "world" phones were few and far between and there was more of a regulatory issue. The iPad WiFi+Cellular faces the regulatory and LTE band issues like the iPhone. The iPad WiFi, just like the iPod Touch, is not regional and is a worldwide device. I sent one on loan to someone in Europe and while they had it the device failed. It was in warranty. The took it to the nearest Apple Store and it was exchanged without any questions.

I have never referred to it as an absolute and always link to the actual warranty itself. The fact remains that all iPhones, iPads and Apple TVs have that exact same (potential) limitation when it comes to the warranty.

There has never been any difference in that clause in any of the warranties of those devices over the years. So there is nothing written that says any one device will be treated any differently than any other when it comes to warranty service.

Basically because there differences between iPhones meant to be sold in place and others meant to be sold in another/

For warranty, this means any potential warranty replacement iPhone may not be identical to the one you submit.

For instance iPhones meant to be sold in Japan, have the Camera shutter sound permanently enabled due to legal requirements there. If you take an iPhone from the U.S, and have to get a replacement, you'll get one on which you cannot turn off the shutter sound, because all iPhones used for replacement in Japan would have this limitation.

The United Arab Emirates for instance, limit the usage of Facetime, on only very specific middle eastern carriers and nowhere else. So if you had your iPhone replaced there, you are likely to get one that will not have facetime anywhere else in the world.

There also the chance that iPhone in a specific country may be locked to a carrier there, Which means if you take an iPhone from anywhere else, and get it replaced, you get a phone that may be locked, and would not work with your sim card or carrier.

To avoid all these issues with variations on devices, they simply cannot and in most cases will not honor the warranty outside the country of purchase. As it would cause many more issues than simply getting back to the country of purchase could ever cause.

Apple doesn't give international warranty for ANY phone, not just iPhone 7. It's never been a wise decision to purchase iPhone in a country where you don't live.

Not exactly true, they do have an international warranty of WiFi only iPads.

No, the WiFi only iPads don't, they have even gotten to the point that the model number on the WiFi only is universal. But since Apple doesn't make that clear in their warranty I see your point.