This works with an Ericsson T60LX, likely with other Ericsson phones. It might require minor adjustments to work with other brands.
bbbbb +c p +d ppgb +c pbpgppppbbbbb +c p +d ppgb +c pbpgppppfffffpppfffffpppf G. pp
Use spaces here to separate any notes that are represented by more than just a letter (to make it easier to read). ie notes like c+.
the key:
p = pause (rest)
+ = octave up
. = long note (capital letter G is already a long note, plus an extra .)
So the only note that is not a quarter note is that last "G." It's that last note that holds for a few beats. That might take some fritzin with. The rest are easy.