I have Sony Xperia P with official android 4.0.4 on board. The Polish language uses some letters, that normally (on PC) are typed by Alt Gr+letter (eg. Alt Gr+a=ą). But using Alt Gr on external keyboard does not work as intended on android. How to make it working correctly?
I've found the solution some time ago. The app External Keyboard Helper Pro makes it work correctly.