The E90 is most definitely a prime piece of technology. The 800-wide screen, GPS, media capability, hsdpa capability and the dual screens are very impressive features and make a great specification list. There are, however, very few people that have been able to try out the device. My Symbian have a nice review available and where extremely positive about it. The Register, on the other hand, were not impressed with the E90 and have lots to say about the keyboard.
Alas, unless you have very small fingers indeed, you’re going to be disappointed. So you’re really obliged to use your thumbs.
You can see on this video how small the keyboard is. We estimate it to be about 90mm wide which gives a keyboard itch of around 9mm. This report is being typed on a Kohjinsha SA1 
which has a key pitch of around 15mm. People with big fingers would definitely have a problem with a 15mm pitch so maybe The Register is right. They mention the PSION 5 as a better solution and sure enough, when you check the specifications for the PSION 5 you’ll find that the key pitch was 30% bigger at around 12.5mm
But is the keyboard on the E90 really meant to be for touch-typing? Probably not. Its a device that is designed to be used in two hands and therefore its keyboard is going to be used with thumbs. Unfortunately, The Register tried this too.
The reality is even worse, however. I found I made more mistakes typing on the E90 than I do on an E70 or an E61, which really are optimized for minimizing thumb input errors, particularly the E61, with its widely spaced keys. I made even more mistakes on the new communicator than on its true predecessor, the Nokia 9500. And nothing about the experience suggests I’m going to adapt to the device.
It looks like some further testing is needed on the E90 because if this report is true, it negates one of the main advantages of having the E90 in the first place.
