Love T-Mobile so far, but ran into a problem. I have a Galaxy S3 that originally came from AT&T (boo!). It's been successfully carrier unlocked now though and I've got a T-Mobile sim in it no problem. I'm trying now to do a conditional call forward to a service other than the regular voicemail (YouMail if you must now). I can't seem to do it though.
Tried going into my Phone Settings and updating the numbers to forward to when busy/not answered/etc but it just gives an error about "The Network Returned an Unexpected Response". *004*8888888888*11# didn't work either.
First question, is that even possible since I'm on the pre-paid? Second, if it's not possible, then what do I have to change to so it is possible? Third, if it is possible, then how? Is there someone in customer support to talk to who can set up the forwards?