The N810, like its predecessors the N800 and N770, isn't a phone. It's a Linux-based handheld computer that connects to the Internet via Wi-Fi or with a Bluetooth connection through a mobile phone. Nokia has finally gotten the form factor right; the N810 is a pleasure to hold and to use. The 2.8 by 5 by 0.55 inches (HWD), 7.9-ounce metallic body feels solid, and the richly colorful 4.1-inch 800-by-480-pixel touch screen slides up to reveal a thumb keypad. There's a VGA camera built into the side for video calling, and a little stand pops out of the back if you want to prop the N810 up on your desk. On the top, a lock switch lets you use it as an MP3 player in a coat pocket without worrying about bumping the screen. Overall, it's an attractive, thoughtfully built piece of hardware.