can i ship iphone x internationally with DHL or Aramex

Apple won't ship internationally. Well - they may ship internationally directly from the factory to the customer, but not from an Apple Store location or even from a specific country's warehouse to a destination in another country. However, you can always purchase one at an Apple Store and ship it yourself. It might be subject to duties though.

Officially, Apple doesn't have a retail presence in Oman other than authorized resellers. They don't sell the iPhone X?

iPhone - Apple (OM)

Sure. DHL will deliver any package for you as long as you're not shipping something illegal or dangerous.

Official Apple Support

Apple will not ship out of the country at all.

You could buy it at a store, leave the store, and then ship it wherever you wanted.

Hi

The Warranty for iphones is only valid in the country of purchase?

Always buy iPhone in country where you live.

Cheers

Brian 🇬-1F1E7;