MetroPCS has another low-end device in its offering – ZTE-made E520 aka Agent. The entry-level candybar is the fifth ZTE phone offered by the carrier, sporting such features as 1.3-megapixel camera that can take both photos and videos, 2.4-inch QVGA display, music player, Bluetooth 2.1 with EDR, 900mAh battery and a microSD memory card slot. Size wise, it measures 110x48x14.7 mm and has a weight of 100 grams. As for the pricing, the ZTE Agent could be yours for $69.99 with MetroPCS unlimited plans…