Mobile Golf, made by Camelot Software Planning is a game only ever released in Japan, originally made for the Game Boy Color, but it can connect to mobile phone networks using an adapter, which is where it gets it's name from.
The game plays almost identical to Mario Golf except it has roleplaying elements in it, and you get experience based on your performance on each hole. You earn unlockables by playing the story mode and beating the four champions of golf: Bean, Rozary, Powert and Bird. You can also unlock Mario, Peach, Yoshi and Foreman Spike, by playing story mode.
Here you will find a list of all achievements and trophies available in the game.