At dubai air port duty free shop I bought iphone 11 pro, when I arrived the place where I live (china), it doesnt work. Those people who are working at the shop have to ask the client which country the clients are going to use it. Some one tod me for diffrent country there are diffrent versions. The model number that I bought at the dubai air port duty free shop is a2160. Now someone told me these model is only fixed to work in us. What can I do now? I bought the phone on november 22, 2019. The shop is the elctronics shop at area a, the time was dubai time around 9:50 am. They should have told me the viresion of models. I need them to change with the rite model that fit for china