It is a brand new item. For the compatible network, here is the details from the manufacturer: Network: HSDPA/WCDMA: Dual-band (850 and 1900 MHz)
HSDPA: Up to 384kbps for upload and 3.6Mbps for download;
WCDMA: Up to 384kbps for upload and download
GSM/GPRS/EDGE: Quad-band (850, 900, 1800, and 1900 MHz) (The device will operate on frequencies available from the cellular network) . Further details here: http://www.htc.com/us/product/touchdual/specification.html