Asus ZenFone Selfie ZD551KL 5.5" 3GB/32GB 4G LTE - International Stock No Warranty (Pink) NETWORK Technology GSM / HSPA / LTE 2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 3G bands HSDPA 850 / 900 / 1900 / 2100 DISPLAY Type IPS capacitive touchscreen, 16M colors Size 5.5 inches (~68.3% screen-to-body ratio) Resolution 1080 x 1920 pixels (~403 ppi pixel density) Multitouch Yes Protection Corning Gorilla Glass 4, oleophobic coating - Asus ZenUI PLATFORM OS Android OS, v5.0 (Lollipop), planned upgrade to v6.0 (Marshmallow) Chipset Qualcomm MSM8939 Snapdragon 615 CPU Quad-core Cortex-A53 & Quad-core Cortex-A53 GPU Adreno 405 MEMORY Card slot microSD, up to 128 GB Internal 16/32 GB, 2/3 GB RAM COMMS WLAN Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot Bluetooth v4.0, A2DP, EDR GPS Yes, with A-GPS, GLONASS, BDS Radio FM radio with RDS USB microUSB v2.0 (MHL TV-out), USB Host CAMERA Primary 13 MP, f/2.0, 28mm, laser autofocus, dual-LED (dual tone) flash, check quality Features 1/3" sensor size, geo-tagging, touch focus, face detection, panorama, HDR Video 1080p@30fps, check quality Secondary 13 MP, f/2.2, 1080p, autofocus, dual-LED (dual tone) flash