I have Tmobile...and usually my phone connects to AT&T because the Tmobile reception is spotty unless your outside.
Since yesterday when I am connected to AT&T(full bars) I have not been able to place a call. When I go into Services Status it says "Mobile Voice Status: unavailable" "BIS Connection: mobile network"
So...I can get data perfection fine...but no voice.
When i'm on tmobile I have no problems.
I'm in minnesota...