I play on my desktop, 12 thread intel processor, 3 - 24" monitors..
Also have Poker Tracker which helps a lot for the one who was asking. Keeps notes on players, lets me review hands, replay them and has my history to date with win's, losses, overal graphs and a multitude of ways to look over past history. Another nice thing is a Heads Up Display, shows how others are playing at the table.
I play only on the smartphone due to the ease, but many features that exist on the PC do not exist on the smartphone, and there are also compatibility problems with the Android system that often does not accept downloading the application.
I like using both my computer and phone. My computer is really good for performance and has a big screen, but my phone is more convenient when I'm lying in bed or out and about having a drink while playing a game 😃
I always play from my PC, I can't stand playing from a tablet or phone. I use an HDMI cable so I can play from my PC on my TV from anywhere in the living room.
I prefer a PC or laptop but will use a phone or tablet if necessary. I like to have a bigger screen and to play multiple tables/platforms at the same time.