'The d-pad is quite usable for productivity functions, but it's a little large to use with one thumb for gaming, probably impossible if you have smallish fingers.'
'Photos looked great, but the E2's integrated speaker sounded tinny.'
'The Zire 31 also replaces the two-way navigation buttons used on the Zire 21 with a much more useful five-direction pad.'
'some very nice improvements over the prior Zire models'
'The color display is a passive-matrix LCD with 160-by-160-pixel resolution; it washes out in bright sunshine, and in general is noticeably inferior in quality'
'Stylus It is the typical Sony skinny stylus: uncomfortable for larger fingers and made less comfortable because it retracts to a smaller size'
'A scroll wheel and two directional arrow buttons below the screen promise easy, one-hand navigation--but they aren't implemented as thoroughly as they could be.'
'No wireless technologies are present on this device: Bluetooth, Wi-Fi and GSM / GPRS are all missing, leaving the cradle connection and IR as the only means of interacting with the unit.'
'Write letters naturally and Decuma handwriting recognition software matches characters instantly for fast and easy data input.'