This is an original product from Samsung. When I used the latest version of Android (4.4.2) létui works very well. In fact, thanks to comments on this information correct operating of the case that I decided to buy it.
Just two details as: 1) There is no magnet for the case are handled closed. 2) The functions of the LED are not visible when using this accessory. That's why I give 4 out of 5 stars.