Does apple watch 3 Lte work in my country (vietnam) if i purchased it from japan?

Hi

Apple Watch (GPS + Cellular) is not locked to any specific carrier and has a built-in eSIM that copies information from the iPhone's SIM card.

The built-in cellular features require a carrier plan in your country of use that specifically includes support for Apple Watch (including the carrier activating the device on the plan).

If buying Apple Watch Series 3 (GPS + Cellular) in another country, then you would need to buy a model that supports the relevant LTE and UMTS bands for your intended country of use and your supported carrier there.

There are three different regional versions of Apple Watch Series 3 (GPS + Cellular), each supporting different LTE and UMTS bands, as detailed here:

Apple Watch - Carriers - Apple

If in doubt, I suggest that you contact your intended carrier to ask whether any given model can be used on their network with a plan for iPhone that supports Apple Watch Series 3 (GPS + Cellular).

Note also that the built-in cellular features cannot be used when roaming.

Also keep in mind that warranty service may be restricted to the country in which Apple Watch is originally purchased.

Hi,

I found your reply very helpful!

I’m from Cyprus and the carriers here don’t know when they will support e-sim!

I want to buy apple watch 3 cellular and wait until they support it,”.But how do i know which version should i buy? I mean which LTE or UMTS they will support

You would need to ask your intended carrier in Cyprus.

Thank you very much

You're welcome! 🙂