[Stillrockin]

Welcome to Everything Treo!

I think what you have is a GSM Palm Treo 600. Your problem is that the 700P is not currently available in a GSM model. Rumors are that sometime this fall, Palm will make available a 750 Palm GSM model. To buy unlocked, so that you can use on T-mobile, you are probably looking at around $700 retail introductory prices . . . And I am not sure what kind of high speed network T-mobile is offering or how in place it currently is. The 700P is a CMDA phone and that network supports the EVDO standard. GSM phones use a different standard for highspeed. To upgrade to the 700P means you will HAVE to switch to Verizon/Sprint and no overseas use, but your data is much, much faster than the EDGE/GPS that T-mobile currently offers. The downside to that, is that with verizon, you will pay about $50 per month for unlimited data. Sprint is about half of that . .

To pick up the GSM Treo 750 means at least 3 months (maybe much longer) wait and big $$$ for unlocked. As far as overseas goes, I have never tested, but I know that popping in any Cingular GSM sim in my Treo has worked so far . . . . I am guessing that your 600 is locked to T-mobile. You should see them for an unlock code if you haven't already . . .