I don't think the SIM holder is damaged. I had no problems with Android. SIM worked at the beginning. After fiddling around it stopped working. Same after the reflash. It worked for a few hours and at some time I recognized that it is gone. I have two SIMs both work without problems in my XperiaX. But they don't work anymore in the Pro1 it doesn't matter on which place I insert it. I'm almost sure, that this is software related. If you want to try it yourself, please disable tray two and restart the device.