I use DEV and Reddit for some dev discussions while in commute and Podcasts while doing sports/training. I also believe that putting down ideas, whenever they arrive, is crucial, so I use Trello for that. Plus E-mail to get real-time communication notifications when I'm AFK.
As you see I keep it pretty minimal and believe that main workflow should always be in your PC/Mac. I believe that putting too much stuff in phone can become a distraction sooner or later.
Could you briefly describe your mobile phone setup you use to assist you in your developer workflow? What are some apps you would recommend to try?