The first tablet was broken. It started by itself again and again. In addition, the lid or screen at a corner was separated from the tablet (3 mm column). Have it sent back and ordered another. The second tablet works well except for the card reader. The memory card is unmounted daily and automatically re-mounted by the tablet. Even if you nich touches the tablet; even more so when you move the tablet. Probably a bad contact. Everything else works but as well (Bluetooth, GPS, etc), I will keep the tablet and will use it without a memory card.
SUPPLEMENTARY 09/28/2013: The Wi-Fi Direct connection to work with this Tablet NOT! Have a SG S3 un with the SG TAB 3 8.0 attempts. Irgendawann the connection appears to be made, but you can not transfer!