Tried making calls with the Samsung wired head set that came with the Tab and once again the device just stayed in speaker mode.

Did a Google search and found this thread in link below. Not sure what is going on here. Why would Samsung include a headset if it does not work for calls for some Tabs? Could they have put a tweak in so you are forced to buy a Bluetooth headset (hopefully a Samsung one) and cannot use the device with a wired headset?

http://www.mygalaxytab.net/samsung-g...msung-headset/