This phone is designed to work on the AT&T GoPhone network in the USA. Even after it is unlocked, it probably would not connect to most 4G networks in Europe. Microsoft sells Lumia phones in Europe that are designed for the networks in Europe.
仔细看了一下:You can use the AT&T - Microsoft Lumia 640 with any carrier that supports GSM networks.
其它运营商只能用gsm网络,仔细看了一下
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