According to a report recently published by The Information, Huawei is said to be planning to formally launch its flagship phablet offering, the Mate 10, in the United States mobile market less than a couple of months from now through AT&T. If this report turns out to be true, then the debut of the Mate 10 on the second biggest wireless network in America would mark the first time the Chinese phone maker has ever pushed one of its mobile devices through one of the Big Four carriers in the country (the other three being Verizon Wireless, T-Mobile, and Sprint).
from
https://www.wirefly.com/blog/news/huawei-mate-10-might-debut-att-february