OK, I will ask you something about sim recognizing. On my phone, I have to android 2.3.6 roms. The first one recognizes my sim card, but the second one doesn't recognize it. Which files do I have to replace from one to another rom to make my second rom recognizes my sim.And although my second rom doesn't recognizes my sim, it works well. But i want to make this one to recognize my sim. Any help is appreciated. I think it isn't necessary to give my phone model for now.