This keyboard is used with a Samsung Galaxy TAB3 10.1. operated and tested. The pairing works with the help of mini instruction easily. The LT. The commands described Table buttons and functions do not work or partially with other results. Thus, the keyboard key starts View (F3) directly contacts app. Some keys do not function according to the labels (#), the hash (#) is apparently non-existent. The @ key is the way to Q and is the right Alt key (on PC Alt Gr) to reach. All umlauts are available and in place. For me the keyboard is just barely usable with the aforementioned drawbacks. In particular, I found not hash (#) is annoying. But the Vertauscher and the actions of the function keys. Summary: You can use it (as long as you do not need #) quite fast write. The function keys are to be used with caution. Because of the many errors thus only the basic function remains (letters tap) useful. I think more than two points can not exist. Finally, there has to be a distance to good and above all faultless products / manufacturers.