This unit powers when connected to the power supply. Battery will hold a small charge but may need replaced. The BlackBerry Nextel Cellular SmartPhone Model 7520 is a vintage collector's item with a 2.5-inch screen size and a sleek black color. This device features a single SIM card slot, Bluetooth, USB, and GPS connectivity, making it a versatile and reliable phone for its time. With 32 MB of storage capacity, this phone operates on the RIM operating system and is perfect for those looking to experience the nostalgia of early 2000s smartphones.