OK I am a noob I rooted and installed CMW on my phone. Then I tried the ICS port and I loved it except it didn't have wi-fi calling. Then I tried [ROM] T989 || Stock || Bloat Free || Rooted || Su || Busybox = STREAMLINED V2 by teshxx. With this ROM my phone makes the T-Mobile boot sound and then I just get a black screen. I can flash other roms but I want the wi-fi calling feature back.