Iphone X form Japan
if I buy an Iphone X in Japan it will work in Italy with Italia sim?
I know nothing about how phones are sold in Japan. Are they carrier locked, like they are in the US? Apple is not offering a Sim-Free iPhone X at launch, so if you purchase a phone in Japan, you'd need to first ensure it is not carrier locked. If you can get one that is not, you'll need to determine what Italia uses for their cellular service, like CDMA or GSM and purchase a phone that is compatible on their network.