Does anyone have a case for the GT2 7" that has the wake/sleep feature in the cover? I recently purchased 2 from Ebay that claimed to have this feature, but did not. I think the sellers from China thought the smart screen feature was controlled by the case cover, but it is actually eye recognition. Descriptions are vague; is there a magnet in the case cover that causes the tablet to turn off and on or what? I really liked this feature on the Ipad case and would like to find a case for my tab 2 with the same feature. Help!!