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Perhaps the most significant improvement in Android 2.3 is its power efficiency and the resulting extension to battery life.
While admittedly unscientific, our baseline for battery life is a G1 phone from HTC, which gets about 10 hours of standby time or about two hours of talk/media playback time. That phone is running Android 1.6 on a Qualcomm 528MHz MSM7201A processor. The Nexus S gave us a full day of testing, phone and media player use and Internet browsing, and still had about 14 percent to spare.
Also vastly improved is the phone app. Upon launch, the default tab is the dialer, as we believe nature intended. And no longer does one have to visit the menu to invoke the speakerphone, dialer, Bluetooth and mute functions, all of which now have dedicated buttons where there used to be blank space. Also, phone contacts, calendar items and email all sync properly now; Android 1.6 on this account was an epic fail.
Communications capabilities in the Nexus S: 2.5G, 3G (HSDPA 7.2 Mbps HSUPA 5.76 Mbps), WiFi 802.11 b/g/n, Bluetooth 2.1 +EDR, Near Field Communications, A-GPS, and USB 2.0. Audio decoding: MP3, AAC, AAC+, eAAC+, AMR, AMR-NB. Samsung 1GHz Hummingbird (with ARM Cortex core) processor, 512MB system memory, 16GB user memory.
The Samsung Nexus S has a street price of around $529, and is available for AT&T and T-Mobile networks. And for solutions providers seeking a development platform that's pure and free of carrier-built functions, the Nexus S is an ideal choice.