I think "integrated" is a better term for my usage than "addicted". My phone is an extension of my digital presence, and although I work from a desktop computer day-to-day, my phone is an integral part of my ability to automate and operate my tools, hardware and software. Besides work stuff, it's also fully integrated into my home life since it's my interface for my home automation as well as my primary means of staying up to date with news and info I need.
But I don't really play phone games, and I don't do social media (other than KBin at the moment, anyway), so I don't find myself using it in an addictive way too often.