BargainPDA took a look at the iPAQ hw6515 smartphone from HP, here's a short quote from their test report:

Okay, so I hate that the Treo is the smartphone that everything is compared against, but that's the best way to quickly describe style of the HP iPAQ hw6515 Mobile Messenger. The 3 inch screen has a resolution of 240 x 240 and the thumb keyboard below the screen is very easy to use. Slightly raised buttons and a positive click sound to each button make it easy to tell what (and if) you've depressed. Besides the standard keyboard keys, there are a few additional buttons. There is a green phone button to enter the phone app and dial a number.



Link: BargainPDA