International Warranty

There is no international warranty for iPhones. While it is possible that an Apple Store in India would be willing to do minor repairs under the warranty, anything that might involve replacing the phone wouldn't be covered as the models are different in India. You would need to send the phone back to Canada to someone who could then take it to Apple.

gp0504 wrote:

I'm looking to buy a new iPhone 15 for my mother who lives in India. I'm wondering if the international warranty will be valid if I purchased the phone in Canada.

The iPhone does not have an international warranty. If purchased in Canada, it will have warranty coverage, only in Canada.

There is no such thing as an international warranty. The warranty is valid only in the country it was purchased.