If by HSUPA you are actually talking about upload speed, then consider yourself lucky. I can't get more than about 130kbps up on my Nexus. I north of Baltimore. I tried the captivate in ATT store and downloaded the speed test app and had similar results. HSDPA download speeds are usually great at 1.6Mbps to 3.0Mbps. Except in the building where I work where I get 200-500kbps.