I've got a T-mobile Dash that I unlocked and installed WM 6.1. However, in that process, the "t-zones" button has stopped functioning as such. Is the phone still t-zones (and more importantly, MyFaves) compatible? I assume with MyFaves, it's simply a matter of T-mobile recognizing the established numbers, but one never wants to assume too much. If that's not the case, is there a need to have access to t-zones for that purpose?