I fail to understand why anyone who doesn't need an unlock would then use this unlock and then complain about it?
You are either using att and don't need to unlock or you don't. There should be no discussion about visual voicemail here. Don't like the unlock? Then don't use the unlock.
Just because ppl are on AT&T doesn't mean they don't need the unlock.
I use AT&T when I'm in the US, and I prefer to use the same phone when I travel overseas. Jb and unlock allows me to keep using my own phone on an international carrier's cheaper prepaid sim, vs letting AT&T rape me with their international roaming charges.