The Android built-in keyboard like Symbian's is unusable for different reasons. The Android one has dead spots (e.g. try hitting the space bar on the Nexus S; enjoy the dead zones :-) !). Symbian's is unusable because it's two step (you have to tap a checkmark and then tap again to get the keyboard input recognized) not to mention the fact that pre Symbian Anna the portrait keyboard is a touch version of T9!). I am exploring different keyboards and hopefully will find something decent for both Android and Symbian and then I'll blog about it.