When I had a Google Nexus and I used Google Voice as my phone number, most of the things I could do in my phone I could do in my computer as well. Recently I had my phone stolen and I decided to try the iPhone, mostly because the latest Nexus is way too big for my pocket, and it turns out that I can do way less things in my computer than I could with the Nexus. That said, still there are a few apps that I can only use from a phone which is very annoying. I look forward to the first phone or laptop that solves that problem. To me a phone is a poor man's computer that you have to use when you are on the road, but if you are in front of your desk, there is no reason you should be forced to use an inferior input interface to interact with your accounts when you have a keyboard and a trackpad in front of you.