thanks a lot, Rob!
the dialogue what disappears maybe a problem of Android: also here it appears only 1 or 2 seconds, than disappears, so I must memorise the six numbers and type in the keyboard soon (with enter) first of the grey label become black, otherwise it cannot be paired. A mess!
This problem is a real problem when I want to use it both with iPad and Android: iPad pair it immediately, Android not.
But when it works it is very good.
For the key mapping External Keyboard Helper pro (EKH) that consent to redefine keys and other and with my Italian setup it is better than the internal system. When I don't nee the Microsoft keyboard I could use the internal layout, when I nee it I choose EKH and in Linux (English layout) I've the Italian mapping. Only in X xterm has almost all Italian keys but not the slash (/) over the 7 key: it returns a "?" instead: I don't understand how to get it...
Salvo
You describe exactly what happens with my Gemini. It doesn't happen with some other Android devices.
EKH may solve any problems you encounter, but please be aware that the Gemini relies on its own keyboard application. It may not play nicely with EKH.