The Razr phone is a great marketing blitz. It's about as thin as a PDA, but not quite. It's actually thicker than my palm pilot. But the RAZR is also about the same SIZE (height/width) as my PDA. So if you want to carry around a slightly thicker version of your PDA and call it a phone, then the RAZR is the phone for you. Otherwise I strongly recommend looking at other phones, such as the Samsung 335, which easily slips into your pocket without being noticed.