I switched to Straight Talk this week, on a Galaxy S2 from t-mobile, acquired a t mobile sim card. The service works, I get calls and (some) data, but voice mail doesn't work. When I call it, I get the message " Welcome to the voice mail system, if you have a voice mail account please press star then enter your 10 digit number." I do this, and it tells me my number is invalid. I called ST directly for help (ha!) the woman had be factory reset my phone then told me to wait 24 hours. SO here I am with all my personal settings lost, the phone still doesn't have voice mail, and it has been well past 24 hours. I understand that a lot of stuff will self service for the lower monthly bill, but come on!