The STRIKE M helps tremendously here. Even here, the keys are not huge, but it writes itself but a lot more comfortable, faster and without the nasty AutoCorrect, the happy times imputes a the wrong word. My android phone to connect to check a matter of seconds with the keyboard and set once everything is perfect. Should mention that I first had problems with umlauts and special characters, which was not at the keyboard but had to be suspended under Android.
The keyboard comes with a practical, water-repellent shell in which you can squeeze even the stand for tablet / smartphone and the charging cable for the keyboard. So you have everything together.
The mouse function on the keyboard is certainly not exactly brilliant, but with practice it can be run, better than many real touchpad on notebooks quite well.
I'm really satisfied, although I drag the keyboard does not constantly around with me, for it is too large, but who much sitting in the train, in coffee or even at home and via WhatsApp writes etc., which I can highly recommend it facilitates communication immensely.