For me it is the exact opposite, since i am in front of a computer so much at work and at home its just easier to type out longer posts and im not dependent on 3g and im able to type longer and faster on a keyboard.
i have not used Tapatalk on my phone yet, i think im going to try it out and perhaps things bay change but im going to say
Over 90% phone. Probably close to 96%, really. I'm on a computer all day at work, but anything like a forum is blocked. And when I'm at home, my MacBook usually just sits and streams Pandora through the speakers I plug in. It just seems so big and cumbersome these days. Plus, sprint's data is usually faster than the wifi in my apartment.
Tapatalk is an application which allows you to access the AC forums in a much quicker more user-friendly way with your phone than using the mobile website. I STRONGLY recommend it.
I generally only use my phone during my lunch break at work or if I'm killing time at a coffee shop. I'm usually using one of my computers whenever I'm at home.