I'm using xt-1033. I do not use the second sim. I therefore installed the xt-1032 falcon rom .gb(uk firmware). I later installed a couple of ROMS (PACman ROM and SlimKat ROM) for testing (I was a former active ROM tester, now this activity has been reduced by me).All showed the correct signals and I was able to use mobile data. But the problem which arose was that of getting calls. My mother called me thrice but not even the screen showing to attempt the call showed up. The screen was normal and din't show up any calls. I myself later tested the call thingy. It worked fine for outgoing but couldn't receive calls which were incoming.