Just found this but thought it was important enough to merit its own thread:

Follow these instructions, to set up your VM number to be used as the number the iPhone dials (thanks mjaste for telling me)

unload comcenter
load up minicom, into tty.baseband
issue AT+CSVM=1,"121" (where 121 is your voicemail number)
it should reply OK
quit minicom
load comcenter

The VM button should now work.

Im using this on vodafone uk where the number is 121, with no probs

Cool might try this later and do u know if its possible to get the little red vociemail icon off of the phone icon. No I don't have any new messages and its currently unlocked using the new GUI. Thanks

That im afraid I cant help you with, I never got the little red dot, where the dot is on my phone, it shows missed calls?!

it's important enough to have on the wiki too:

http://iphone.fiveforty.net/wiki/ind...icemail_Button

Hey guys, we're discussing the problem in this thread as well: http://www.hackint0sh.org/forum/show...?t=6100&page=2

I get the ERROR below...please help!!!

Welcome to minicom 2.2

OPTIONS:
Compiled on Jul 21 2007, 05:09:51.
Port /dev/tty.baseband

Press CTRL-A Z for help on special keys

AT S7=45 S0=0 L1 V1 X4 &c1 E1 Q0
OK
AT+CSVM=1,"138"
ERROR

Originally Posted by stubbze

Just found this but thought it was important enough to merit its own thread:

Follow these instructions, to set up your VM number to be used as the number the iPhone dials (thanks mjaste for telling me)

unload comcenter
load up minicom, into tty.baseband
issue AT+CSVM=1,"121" (where 121 is your voicemail number)
it should reply OK
quit minicom
load comcenter

The VM button should now work.

Im using this on vodafone uk where the number is 121, with no probs

When I run minicom, I get the following error:-

# minicom
minicom: WARNING: configuration file not found, using defaults
minicom: cannot open /dev/modem: No such file or directory
#

Originally Posted by H4V0C

Cool might try this later and do u know if its possible to get the little red vociemail icon off of the phone icon. No I don't have any new messages and its currently unlocked using the new GUI. Thanks

Did you have a missed call when you performed the unlock? It seems that for anyone that did and did not clear it, this is the end result.

I'm on Tmobile USA and my voicemail button automatically calls my vmail with no altering. Or is this about a different button?

maybe you don't need the " signs?