I'm having mixed results setting up conditional call forwarding (CCF) -- can you please provide guidance on this voodoo feature? CCF is required to use a different service, like Google Voice, for voicemail. These 3rd party voicemail services provide a great substitute for visual voicemail, which can't be used on with Straight Talk anyway.
I switched two iPhone 4s from AT&T to Straight Talk (ST). On one, which I had previously used with Google Voice, conditional forwarding worked immediately. On the second it won't work.
For the second phone, there are about six errors on the screen, the first two being "error performing request, unknown error" and "setting activation failed, voice call forwarding, all conditional calls". I'm using the code that Google Voice provides for AT&T: *004 [the number] and #. Again, that worked fine for one phone, and based on the fact that both have 3G service, I'm pretty sure both are AT&T sims. I've restarted the phone and given it 24 hours, and tried disabling call forwarding before reenabling it, but still no dice.
Does anybody have any advice? I'm happy to delve into the nitty gritty of APN settings if that would help.
Thanks so much!