As per an Interview posted by CNet,
The Chinese company known for its low-cost phones will make a smartphone running Microsoft’s Windows 10 software, which launched just over a month ago on PCs and tablets. It plans to unveil a Windows 10 smartphone before year’s end, Steve Cistulli, Alcatel OneTouch’s senior vice president for North America, said in an interview here Thursday at the CTIA wireless trade show. “We are very supportive of the Windows ecosystem,” Cistulli said.
Now Evan Blass has further confirmed that the device in question is coming to T-Mobile as the carrier.
(The carrier is T-Mobile) https://t.co/kMKq6vtbAa
— Evan Blass (@evleaks) September 12, 2015