... :4G TF (standard), maximum 32GInterfaces: USB 2.0, RS232Physical characteristicsScreen: 3.2" QVGA backlight TFT- ... Battery: Rechargeable li-ion polymer battery (3.7 V/4,000 mAh) Expansion slots: SIM/SAM/ ... operating temp) Rolling survive: 1,000 times, 0.5 meter, rolling by six contact surfaces Operating ... 3.2 mega pixels, 2048 (H)*1536 (V), QXGA6. All alphanumeric keypadStandard Accessories4,000 mAh Li ...