For months now, we've been expecting Huawei to announce that its flagship Mate 10 will launch on AT&T in 2018. Huawei even confirmed last month that its flagship would be sold through U.S. carriers. Now it looks like that may not happen, though.

AT&T has walked away from a deal to sell Huawei smartphones, according to a report from the Wall Street Journal. It's unclear why AT&T backed away from the deal, and neither AT&T nor Huawei have comment on the matter.

A Huawei spokesperson only said "Huawei has proven itself by delivering premium devices with integrity globally and in the U.S. market."

This move comes as a surprise, as we've been hearing since November that AT&T would launch Huawei's flagship Mate 10 as soon as February. The deal was expected to be announced by Huawei tomorrow, but now it sounds like that won't be happening.

Huawei has a major presence internationally, with recent reports saying that it's the No. 3 smartphone brand in the world behind Apple and Samsung. The company hasn't made much of a dent in the U.S., though, despite the fact that it's been selling its phones unlocked in the U.S. for awhile now.

This AT&T deal would've been big for Huawei, helping it to get its phones inside carrier stores and in front of U.S. consumers, the majority of which still buy their phones from their carriers. Now we'll have to wait and see if Huawei can strike a deal with another carrier or if it'll have to continue on in the unlocked market.