I guess here may be the $1000 question. If the A853 is sold both to Europe and to South America, and we know at least some of the phones in South America have to support 850/1900/2100 UTMS 3G so: Either they are shipping a different piece of hardware down there... OR they are simply using different radio baseband software. Now I'm of the opinion that Motorola isn't as short-sighted as HTC (as with the Goole Nexus One which doesn't have the PA's required to support 850/1900/2100 even though the radio does), but that they have indeed included support for both 850/1900/2100 and 900/2100 into the HW and are simply using different baseband SW. I wonder what would happen if took the baseband firmware from one of these phones from Argentina that supports 850/1900/2100 UTMS and flashed the European version of the Milestone that suppots 900/2100... What do you bet this would enable 850/1900/2100 on the European Milestone???