The Gadgeteer have published a review of the HP iPAQ 910 Business Messenger. 'The navigation key layout and QWERTY keyboard are roomy and comfortable to use. The domed center select button is easy to locate with your thumb. Around it is a plastic ring that can be pressed up/down, Left and Right. There are the normal Green and Red call send and end buttons, along with buttons for the Left and Right menu soft keys. There is also a button to launch the calendar, start menu, email and OK. The thumb keyboard keys are dome shaped and easy to press. All of the keys have good tactile feedback and are backlit, making them easy to see in dim environments. I didn't have any issues or complaints using the keyboard for normal text input and text messaging.'