infoSync Norway reviews the T-Mobile MDA, and I can agree with most of what is being said. Some of my additional observations: It's nearly impossible to use the thing one-handed, which can be hard sometimes; there is no way to switch off the very annoying "battery low" indicator or configure it; SMS features are broken from a user interface point of view. Lately, I have been thinking of moving to a two-device setup. Recently, I have even thought of replacing or supplementing it with a 'simple' phone like the Siemens S55. I have yet to find the perfect device ...