well, you dont have T9-like input from roadrunner, so your best way to do this is, use the RR osk for text input.
i like your sliders, and the display itself, looks very oem and good to read!
make 3 buttons, calls / sms / PB, and make the 3 screens looking the same.
make a left right, up down, pg up pg down button.
just swapping the list in the same screen you know what i mean?