A new LG device carrying the model number LG-US997 was spotted in a http user agent profile.
As you can see from below screen shot, the device;s model number is LG US997 and the device runs Android 7.0 Nougat
Given the fact that LG’s flagship phone for U.S. cellular Carried US991(G4) US992 (G5) and US996 (V20), It is safe to assume that the US997 is LG’S 2017 flagship for U.S. cellular
The device could be the LG G6 which is expected to be unveiled at the upcoming MWC event.
This is all the information we have on the LG US97 so far.