The advent of mobile devices not only allows us to be more connected, it shifts how we perceive activities like reading, and how we think of other devices, like computers. For example, two things I've noticed since becoming an iPhone addict:
Thing 1: When you read things on the iPhone that you used to read on your computer or in analog (a newspaper or a book, for example), you're still perceived as doing something much more frivolous and distracted, like fragmentedly texting or obsessively checking email. You're perceived as being unfocused on the world around you rather than focused on a piece of content. Tim and I noticed this once when he was reading a book and I was reading on the Kindle app, and he kept wanting to tell me to stop obsessively checking my email or something--and he had to keep reminding himself that I was actually engrossed in a Dickens novel.
Thing 2: My home computer has become much more fun, because much more of my stress-related email checking has moved to the iPhone, while use of my computer has basically degenerated into watching Battlestar Galactica DVDs (and writing the odd blog musing).