Here's the brand-new, Tiger-updated list of products that work with iSync: http://www.apple.com/macosx/features/isync/devices.html Here are the phones T-Mobile is offering on their U.S. website: http://www.t-mobile.com/products/default.asp?class=phone Do you see a match? All I see are the Motorola v180 and v600, neither of which seems very appealing (does anyone like Motorola phones?) On T-Mobile's Handhelds page, there are two matches, the Treo 600 and the N-Gage. WTF? If you use T-Mobile, do you sync with your Mac? Where did you get your phone?