There is one glaring flaw we should mention first: The lack of 4G LTE support in the U.S. The Xiaomi Mi A1, even the so-called Global version, won’t connect to GSM 4G networks in the U.S., meaning you’ll have to make do with 3G speeds. Buyers in the U.K. and much of Europe will be fine. We’ve had ours running on the O2 network in the U.K. without issues.