all carriers of the iphone x will work international?

No, that is not true for the iPhone x release. They are NOT all unlocked and if you want to use a US iPhone in another country, then do not purchase a Verizon or Sprint phone - they work on the CDMA networks in the US that are not available in other countries. If you want to use it in another country, then you need a GSM phone, which in the US will be either AT&T or T-Mobile, but not at launch for the iPhone x.

Yes, there is not that much change with the iPhone 8 and 8 Plus, so it is likely that there is an unlocked version available, but the iPhone x is such a new phone, that historically Apple does not release a fully unlocked version until about 6 months after release.

Also remember that if you purchase a US iPhone to use in another country, you have NO warranty on the phone if it goes wrong. iPhone warranty is not international. If you have a problem with the phone, then you have to get on a plane and fly to the US to get the phone fixed.

Wait until the iPhone x is available in your country and purchase it there, so that you know it will work and you will have warranty cover.

The only option you have is to contact T-Mobile and see what requirement they have to unlock the phone. Only the carrier the phone is locked to can unlock it.

Surely this only applies if you purchase from Apple directly? I’ve been given an iPhone X purchased from T-Mobile which I’ve discovered is locked and if unlocked by any other carrier other than T-Mobile it will invalidate the warranty and cost at least &£15-£20 as there is no T- Mibile in th UK . Argh! Any advice welcome!

Cheers! I’ll try that!

No, they are not all unlocked.

Some have said that you can purchase a T-Mobile version and it may work, but only if you don't activate the phone with the T-Mobile sim card provided. If you use the T-Mobile sim to activate the phone, then it will lock to T-Mobile.

Normally, Apple will release an unlocked phone about 6 months after launch of a new phone.

Wait six months if you want a truly unlocked phone or go and purchase from a European country, such as the UK, where all Phones purchased from Apple directly are unlocked and are more compatible with your country than a US iPhone is.