Apple Watch Series 4 US/UK
Hi, can I purchase a Non-cellular Series 4 Apple Watch in the United States and use it in the United Kingdom with my UK iPhone?
Question marked as
Best reply
You can use it in UK with your UK iPhone, because the watch does not connect directly to the cellular system.
A US purchased Apple Watch with LTE will not work with your UK carrier's network, so don't get pressured into an upsell. See Apple Watch - Carriers - Apple