How do I change my username, info & remove friends?
At the main screen, press the menu button on your phone and then settings in the menu that appears. Under the "User information" section, press "Edit profile". However, you can't change your username.
To remove friends: Press the "Friends" card on the game's main screen. Expand any categories (such as "Offline") if necessary and press the friend for a few seconds (a so called long press) until a dialog shows up. Press remove.