BlackBerry 8520 Curve. Display diagonal: 62.5 mm (2.46 "), Display resolution: 320 x 240 pixels, Display: TFT. Internal memory: 256 MB. Processor clock speed: 512 MHz. Mobile operating system installed: BlackBerry OS. Networking features: GSM/GPRS/EDGE, Operating frequency: 1900/1800/900/850 MHz