ArsTechnica published a review on the Xiaomi Mi A1 Android smartphone
A quote from the article:
Xiaomi's first Android One phone is a winner, provided you can handle the LTE bands. While Xiaomi keeps pushing back its attempts to get a serious foothold in the US, it's still fun to take a look at one of their phones once in a while. Today, we're looking at one of the highest-profile Android One devices out there, the Xiaomi Mi A1. With this phone, you get Xiaomi's typically great (if unoriginal) hardware with a mostly unaltered build of Android, which makes for a pretty awesome combo, especially for the low, low price of $220.Xiaomi Mi A1 Review: A $220 iPhone clone with stock Android
Xiaomi phones are often pretty difficult to purchase, but this phone, as part of the Android One program, is getting a rollout to more than 40 countries, along with a bit of a push from Google itself. None of those countries is officially the United States, but the Mi A1 is just a click away on Amazon. The problem you'll run into is with the LTE compatibility, but with band 4 it is partially compatible with T-Mobile and, if you're lucky, some Verizon and AT&T signals. There's also always Wi-Fi.