Originally Posted by shutter13
I have seen a couple of people talk about losing their visual voicemail after adding the custom ipcc file to get mms and tethering on 3.0. My Visual Voicemail works on 3.0, but I would get the messages pretty slow. I just saw this on another forum and tried it, tested my visual voicemail and it came through very quickly. The slowness may have been an AT&T thing, maybe not, either way if yours doesn't work at all, there is no harm in trying this.
In Settings>General>Network>Cellular Data Network
Under voicemail...it it says wap.cingular change it to acds.voicemail and restart your phone.
You can always put it back to wap.cingular if it doesn't work.
Where were you last night when I spent 2 hours on the phone with ATT while they tried to trouble shoot and had no clue what they were doing. My voicemails were coming in 5-10 mins later or sometimes not at all. This little update in my settings and now I get my voicemail within 30 secs. Awesome.... thx!