Good Gear Guide
In Pictures: First look - Nokia's new Windows Phon...
Nokia 820 will be cheaper (though Nokia refused to talk about price or availability dates), slightly smaller and lighter (0.39 inches thick by 2.69 wide and 4.87 long). The screen is fractionally smaller at 4.3 inches diagonally, with a lower resolution at 480 x 800 pixels. It has a less expensive camera system but still offers 8-megapixel images. It features the same Qualcomm chip, at the same clockspeed, and 1GB RAM, but 8GB of storage. It has the same cluster of wireless links: NFC, Wi-Fi, Bluetooth. The battery is smaller, at 1650 milliamperes, with up to eight hours of 3G talk time, 330 hours of standby and 55 hours of music playback.
In Pictures: First look - Nokia's new Windows Phone 8 smartphones