Aaron does a dogfight battle between the HTC One VX and the Nokia Lumia 820, two nice mid-range smartphones on AT&T. The HTC One VX offers a 1.2 GHz dual-core Snapdragon S4 CPU, 4.5-inch qHD display, 5-megapixel camera with 1080p HD recording, 1,810 mAh battery, 4G LTE, and Android 4.0 with HTC Sense 4. The Nokia Lumia 820 sports a 1.5 GHz dual-core Snapdragon S4 CPU, 4.3-inch WVGA display (480x800 pixels), 8-megapixel camera with 1080p HD recording, 1,650 mAh battery, 4G LTE, and Windows Phone 8. They're both $49.99. Which one will win? Part 1 of 2.