Originally Posted by cadGweep
You can save yourself some time and button pushes by storing your voicemail password along with the voicemail number. Then when you press the voicemail shortcut in the Phone Dialer, it will go straight through.
Go under Menu > Settings > Call Settings > Voicemail Settings, and set the number to: *86,,XXXX#
where each "," represents a pause
XXXX = your pin code
I sorta winged it since on my last phone I used "P" for pause, but Android won't allow me to enter letters no matter what I try. So I could be wrong about using "," but I tried it and it works!
I can confirm this does work on my Droid as well. Every little bit helps! Also if anyone doesn't know how to display the ",," press the symbol button in the lower left corner of the dial pad and that will bring it up.