A GSM version of the Evo 3D is listed here:http://www.mobilecityonline.com/wireless/store/productdetail.asp?productid=27854#section3 AT&T Bands: 3G:850/1900 2G:850 or 1900 HTC Evo 3D GSM Bands: 2G:850, 900, 1800, 1900 3G:900, 1900, 2100 Here is a map of frequency usage in cities by AT&T: Cellular Maps.com-AT&T 850 vs. 1900 MHz Coverage I live in Florida. I want to know if this phone will be able to use AT&T's 3G because the 1900 Mhz is used by 3G from AT&T, the phone supports it, and the 1900 MHz is all over Florida. Basically, I need to is the same 1900 MHz band used for 2G and 3G or is there one 1900 band for 2G and one 1900 band for 3G. The map didn't make a 2G or 3G distinction for the 1900 band it showed. Also will the phone be able to connect to the 3G as long as there is a 1900 Mhz 3G band covering it's area? One more thing, is the 1900 MHz 3G band noticably weaker than the 850 3G band? I know the lower the number the more it can penetrate buildings, but I mean if I'm outside there isn't a difference, right? Thanks.