Blackberry Z10 16GB - T-mobile 4G LTE Touchscreen GSM WiFi Black STL-100-3 GSM Quad Band LTE HSPA+ - GSM 850 / 900 / 1900 / 2100 / 1700/2100/AAWS - SLT100-3 BlackBerry 10 OS; Qualcomm Snapdragon S4 processor with dual-core 1.5 GHz CPUs 16 GB internal storage, 2 GB RAM; microSD Slot expandable up to 32 GB 8 MP (3264 x 2448 pixels) w/ Auto-focus rear camera, LED flash, continuous and touch to focus, image stabilization; 1080p HD video recording (rear); Time Shift mode; 2 MP fixed-focus front camera; 720p HD video recording (front) 4.2-inch touchscreen with 1280 x 768-pixel resolution, 356 PPI, 24-bit color depth; Wi-Fi, USB 2.0, Micro HDMI