Yes, LG G7 Plus does have the portrait mode.
Yes, LG G7 Plus is Qualcomm QuickCharge 3.0 compatible and also bundles a fast charger inside the box. The charger supplied with the box is of 9V/1.8A and a 30-minute charging session gets G7 from 0% to 40% charge.
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 3.5 mm headphone jack.
LG G7 Plus has 8MP resolution front camera and its aperture is f/1.9.
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.