It has the contacts & printed circuits of the original Samsung frame. That is, the Wifi, speaker, and cellular contacts, but not the NFC antenna. Unfortunately, the plastic power button did not fit correctly on the ribbon cable and kept the power contact pressed permanently. I detached the printed circuits, which I wanted to replace anyway and couldn't find anywhere, and I soldered them onto the original device frame. Maybe I just got a faulty one. Either way, I managed to make it work.