As a former Treo owner, I bought the xv 6600 to get an Internet Explorer browser (versus Treo's proprietary browser which didn't work with all sites). From a data perspective the phone is a decent device, but as a phone it is poorly designed. Problems include no easy way to turn on speakerphone, poor notification of missed calls / voicemails. The battery life is also pretty poor (expect to charge once a day if you use it at all). Keyboard is also very poor and difficult to use since the buttons are basically flat. The battery is also prone to pop out and lose also all your data. Restoring data to phone is also very difficult and potentially dangerous (I lost all my data one time when the phone sychronized with Outlook and deleted all my data in Outlook). Phone has a very cheap feel, unlike the Treo which had a very solid feeling. Unless you really need to have this phone I would hold out for something like Samsung i730 or Treo 650.