I bought my Treo 650 unlocked because I expected to be able to use it with imy Macintosh until I'm ready for wireless phone service. Unfortunately, the device I received came with a visibly defective synchronization cable:there are far fewer copper pieces projecting from the cable than there are slots to receive a connection in the Treo.Since the Treo had come in a sealed box from the manufacturer, first I tried contacting Palm to see about getting a replacement cable. After finally getting through to Palm's customer support and being walked through a final unsuccessful attempt to make the software work, Palm refused to replace the cable. They referred me back to Amazon.And as it turns out, Amazon's return policy is that you can only return items that are in an unopened box. How you're supposed to know that an item is defective without opening the box mystifies me.Except for the single defective cable, the Treo 650 seems to work fine. Amazon, however, should have a "caveat emptor" on its site to let customers know that they're on their own if these "unlocked" Treos come with defectve parts.