Just got the SM-P610 and liking it a lot. I noticed that the SD card tray has a spot for a SIM card as well. After looking in the slot it appears to have contacts for a SIM card to be accepted. Upon inserting my SIM and turning on the device it appears to not work. Now here's the question, Does the tablet have the hardware to actually accept a SIM card and connect to the towers. Along with that, is it software locked in some way? Can we bypass this lock somehow?