I'm going to rekindle this old thread. Expansys has a good deal on a Windows Mobile Dual SIM phone which has just about every band you can think of. While I prefer IOS or Android, this looks like a great travel phone.
http://www.expansys-usa.com/microsof...-black-276476/
I'm still looking for a good callback service recommendation for WM.
With some of the great pan-European data deals out there and some of the other SIMs which now offer free incoming on non-surcharged phone numbers (e.g. a regular US or UK mobile number -- not IOM, Jersey, Lichtenstein, Estonia) I can see some great possibilities here.