So I rooted an exhibit sgh-t599 and rooted it successfully and went to install a recovery it froze on me and then somehow ruined the stock os so i couldn't get the phone on. I hadn't had a chance to make a backup yet so the only option I had was to install a new rom to try and fix it. I successfully installed one and got the phone on now the only problem seems to be that i can't get 4g working. It isn't even an option in the menus. Any ideas? Could it be that I'm not using a rom that supports 3g? I'm using carbon kk rom. Any rom recommendations that support 4g?