But feel great runs, not easily with Android ...

I have this keyboard appointed as external input medium for the Samsung Galaxy Note, as it seemed too complicated, constantly switched in texts with many special characters between the views of the on-screen keyboard back and forth. I admit occupationally caused many brackets and braces, the degree symbol, Paragraphenzeichen etc., and because inhibits the constant switching or long press-and-then-out-the-pop-select but very the flow of writing.

Is delivered - as described - a keyboard layout in German (QWERTZ) with keys for umlauts (ÄÖÜ). The images in the product description to show incorrectly the English layout - not be irritated!
It is quite easy (about 146g) and measures when folded 144 x 92 x 15 mm, unfolded 291 x 92 x 8 mm. It consists entirely of plastic. In joint are located on both sides of small plastic "gears" which are to ensure a balanced flow during folding operation. The joint itself is almost no play, yet easy to move. The only drawback here is in my opinion the lack of locking or determination in open state: The keyboard needs a firm, level surface. When writing on the lap, for example, they will just not fully open, but falls into the V-shape. During closing two small cones set on one side in two respective rubber bushes on the other side, so the keyboard can not inadvertently open themselves.
The keys are slightly smaller than the laptop, of course, but have a very well-balanced tactile feedback, which makes writing very pleasant. The general processing convinced wholeheartedly - despite "Made in China"!

After unpacking you have to recharge the keyboard first time. This goes with the included micro-USB cable (the same socket as they have the most modern smart phones) to either the USB port of a computer or just with the anyway existing USB charger of the phone. If the battery level of the keyboard during operation draws to a close, the battery LED will light up, and thus call for charging. But I can make no statement, I have not yet reloaded only been two days, and she had on the battery life. The keyboard can also be loaded in the closed state, the charging socket is on the outside.

It is switched on by a long press on the recessed "POWER" button, and acknowledges the correct start by repeatedly flashing both the green battery LED and the blue (color logical, right?) Bluetooth LED. This blue LED lights up even with each keystroke, and unfortunately quite bright, which is rather unpleasant because too bright, is in darker environments. Is switched off by briefly pressing the "POWER" button, but this is lit on the keypad to nothing. It merely recognizes the phone that the Bluetooth icon of "coupled" changes to "uncoupled". This is in my opinion a bit unfortunate, because I would find a brief illumination of an LED as the power-very helpful as a confirmation!

In order for the first time with the phone to connect ("pairing"), one must first turn on the phone in the Bluetooth System Preferences visible to other devices, and then the second recessed pushbutton ("PAIR.") Press and hold on the keyboard. Then the phone takes a Bluetooth device, you select "Connect" and the keyboard is permanently paired with your phone. That is, they will be automatically recognized the next time you turn on the phone.

So much for the easy part ...
Since Android recognizes (in my case 4.0.4) the keyboard but only as a generic HID device ("Human Interface Device") and with a stored in the operating system's default character table (for US-English keyboard layout, QWERTY) operates, many are the pressed keys easily misinterpreted. For example, Z and Y are swapped and the punctuation and special characters are on all buttons other than printed. One might hope that manufacturers would mitliefern a customized character table (which he could readily and would certainly like to do), but the case is not quite so trivial: In Android this character tables are namely in the protected system area, so you his phone already rooting (in the iPhone world is called "jailbreak" the) need to take anything at all there can. That will not be the case for most users, because on the one hand the rooting process is complicated vary depending on phone model and Android version, and secondly threatened with a possible loss of warranty!

The solution to the problem is found in the Play Store: There's an app called "External Keyboard Helper Pro" that signs up as an additional screen keyboard on the phone, in the system settings (see "Language & input") you have the one-time permit (a safety feature of Android: No app can without consent manipulate keyboards, so malware can spy any passwords or similar!). Once the keyboard has connected to your phone, appears on the screen, a selection of which input method to use. You choose there the newly installed app and from then it assumes the correct translation of key presses. From then on, the keyboard works perfectly normal, with all the special characters. If you turn off the external keyboard again, you have to but then manually select the onscreen keyboard. Unfortunately, the software just does not do it themselves, because of the above limitation of Android.
This app is unfortunately a fee, depending on the dollar exchange rate are due to 2,35. There they are also in a free trial so you can test only once in peace if it cooperates with the existing hardware at all.
Another app called "UpSoft Clavier QWERTZ.DE" should also work, but I did not check, because there is no trial. She is sure to have something cheaper, for only 1.50.

Conclusion:
I am very satisfied with the keyboard. One star deduction there mainly for the fact that you not only have to rebuy an app to it at all reasonable to put it into operation, but especially that you have to look this information cumbersome itself. In the accompanying manual is found to nothing, and on the manufacturer's website you need under "Support" at another keyboard model (Periboard-804) see to find the indication of the apps at all. In the product description here on Amazon, I would find a clue not only appropriate but imperative !. Contributed only a little to the deduction have the above-mentioned small things (no lock, no switch-off confirmation to flash LED).