LXLG&reg; Unlocked 5.5 Inch IPS Screen Anroid 5.1 Cellphone Mobile Phone 3G Phone Smartphone MTK6580 Quad core Quadband Dual SIM Dual Standby RAM 1G ROM 8G 5.0MP 8.0MP Camera Wifi (White) Please open back case to remove the insulating tape on battery before startup! 5.5 inch 540 x 960 qHD Screen OS:Android 5.1 ; CUP:MTK6580 Quad Core 1.3GHz ; GPU:Mali-400MP ; RAM&ROM: 1GB RAM + 8GB ROM Dual Camera , 5MP/8MP 3G (WCDMA 850/2100) and 2G Quad Band International Version (GSM 850/900/1800/1900) network of US Compatible Nationwide on all GSM Networks including AT&T, T-Mobile, H20,Cricket, Tracfone, Straight Talk and others T-Mobile: Lyca, Speedtalk, Go Smart, Simple Mobile, Net10, Straight Talk, Solavei, Ultra Mobile, Telcel America, Walmart Family Mobile. Note:A SIM card need to be purchased separately. Some network company provide the GSM/WCDMA sim card and CDMA sim card also, please buy the GSM/WCDMA SIM card. Do not buy the CDMA SIM card from them.