The key answer of exercise 22

I've been sitting at my computer all morning. I've downloaded three podcasts, which are really interesting, sent about ten emails and surfed the Net. So as not to get too lazy, I'm going to the park to get some fresh air and a break from technology. Of course I'm taking my smartphone to scroll down a few texts or swipe through my apps. My friend Eric, whose knowledge of technology is better than mine, has recommended a new phone but I've been using this one for ages and I really like it.