Calls placed with the Epic 4G Touch were loud and clear -- but there wasn't anything astounding about the voice quality, either.
Data in New York City was a mixed bag. There were times when I could not access Sprint's 3G network even though it reported a medium-to-full signal. I tethered the device to my laptop to work for a few hours using its 3G connection, and the overall experience felt much slower than AT&T's network, which I typically use for work. My average 3G download speed barely reached over 1MBps and upload throughput was half that. Sprint's 4G WiMAX network offered much better download speeds -- about 8Mbps on average -- but it takes a toll on the battery life and so I typically left it turned off.
