According to the FCC documents, it’s the LG D959, with LTE Band 17,LTE Band 4 (AWS) . There’s also quad-band GSM support, as well as 802.11 a/b/g/n/ac WiFi networks, Bluetooth 4.0, NFC and GPS.
A post on http://www.androidheadlines.com/ said that the LG D959 is the LG G Flex for AT & T, but We’ve heard from LG that the LG D959 (LG D959TS) is the G Flex for T-mobile.
Now are are pretty sure that this LG D959 is coming to T-mobile Soon.
Stay tuned for more information.