I'm coming from an LG G3, so I have very little transition and am used to their user interface. My primary concern was battery life relative to the G3, and so far while I've been getting it set up and configured, the battery life is "better" (better by at least 15-25%), and I'm happy that I've got more life span than my G3.
I thought I wouldn't be able to live without my precious tap on/tap off feature from the G3, but I've quickly fallen in love with the finger print scanner rapidly and consistently unlocking things and bringing the screen to life.
The bluetooth connects to all my devices, wireless headphones, car, home stereo systems, heart rate monitor, and foldable keyboard. I've noted that the V20 transfers artist, song, and album from music on my SD card, from Pandora, and from Spotify. My G3 simply played the music, but didn't show it on the display in my vehicle.
My G3 was always reliable with the phone signal, and with two days of calls with family, employees, customers, and vendors, the V20 is every bit as good as the G3 was, and while it's probably better, I can only speak to two days worth of usage. So far so good with reception.
The V20 is a BIG phone. I really liked the curved back of my G3 it was really unique and it worked in my hand very well. I don't like that all phone manufacturers seem bent on making their devices look as close to an iphone as possible, but maybe that's simply petty on my part.
The secondary display is neat and I'm continuing to try to find ways to make how I use my phone more efficient with it.
The G3 was my favorite phone I've ever had, and with 3 days of usage I think the V20 is becoming my favorite of all time. I wanted a big screen, a fast processor, and a removable battery. The Pixel XL and Note 7 only got two of three features right from my perspective. Moving from one Android device to another is very straightforward and I'm a happy camper with this phone.