LG G7 Plus has a high-end 32-bit Hi-Fi Quad DAC from ESS and is complete with DTS-X codec. Which means that the phone can stimulate 7.1 surround sound, which is the first time in a smartphone.
LG G7 has a display resolution of 1440 x 3,120 resulting into 564 PPI.
Yes, LG G7 Plus does have the portrait mode.
Yes, LG has added voice recognition in LG G7 Plus. This is actually a combination of a new chipset, a few mics and Google's AI. The G7 Plus can recognize your voice from up to 5 meters distance even in a noisy of surrounding and can launch Google Assitant in an instant.
Yes, LG G7 Plus does have the NFC support.
The LG G7 ThinQ comes with some very appealing features that include a Super Bright Display, a dedicated Google Assistant button, DTS:X surround and an incredibly loud speaker. It also comes with a notch which may not appeal to everyone but its powerful specifications and strong feature set make it a worthy contender.