Acer Liquid M220 Windows 8.1 Smartphone - Black OS: Microsoft Windows Phone 8.1, Chipset: Qualcomm MSM8210 Snapdragon 200 Internal: 4 GB, 512 MB RAM - Liquid M220, Resolution: 480 x 800 pixels (~233 ppi pixel density) WLAN: Wi-Fi 802.11 b/g/n, hotspot, Bluetooth: v4.0, A2DP