The phone I bought is a Blackberry 8830 World Phone.  I bought this phone to replace a Palm Centro.  I use the phone through Verizon.  To use this phone, I only need one hand and it all works from the trackball and keyboard.  You don't need a stylus, like you do with the Palm.  Also, i needed to use the phone in Europe and the Palm does not work there.  The only thing really missing from the Blackberry World Phone is a camera.  But I carry two cell phones, and the other one has a camera, so I didn't need that.  The email is easy to set up.  You can download applications that work great. ...