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The phone, which is available on T-Mobile, AT&T or Sprint, is free Wednesday (August 3) in conjunction with a two-year contract. The Nexus S, which is advertised as having a "pure Google experience" like the ill-fated Nexus One, debuted last fall.
The Nexus S 4G for Sprint is the first NFC-enabled Android device on the market and will work with the Google Wallet service that launches later this year.
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The Nexus S runs Android 2.3, Gingerbread and features a 1Ghz processor, 16 GB of flash memory and a 4-inch touchscreen.