T-Mobile E2550. Display diagonal: 50.8 mm (2 "), Display resolution: 128 x 160 pixels, Display: TFT. Compatible memory cards: microSD, Internal memory: 12 MB, Maximum memory card size: 8 GB. Main camera resolution: 1.3 MP, Main camera resolution: 1280 x 1024 pixels, Digital zoom: 4 x. Data network: EDGE, GPRS, GSM, GSM bands supported: 900, 1800 MHz. Bluetooth version: 2.1+EDR