I have a new mobile phone - a Samsung Galaxy SIII.
I use this when biking; because, it's very useful. It has GPS and maps to check my location and directions. I also installed Strava; so, I could track my rides and record my activities and performances.
During breaks on solo rides, I could play games, listen to music or radios, surf the net, or watch movies.
This is one hell of a mobile phone; and, I love it!