Samsung Nexus S, Sprint This is Google's second run at making its own phone, only this time Samsung is manufacturing the device and Sprint ( S) is selling it. Two years ago, the Nexus One was made by HTC and sold online by Google. It was an experiment in retailing that was far less revolutionary than Google hoped. The Nexus S runs on Google Android 2.3 Gingerbread operating system and works on Sprint's WiMax 4G service. Because it is a phone built to Google's specifications, it includes some of Google's favorite projects including NFC or near field communications that may one day allow phones to make purchases with a swipe at a sales counter. The Nexus phones are big among Android fans who see them as more purely Android than other versions in the market. The Gingerbread system has been a little hard to find and the Nexus S will continue to be among the most advanced Androids until Ice Cream Sandwich arrives as early as year-end.