I bought this phone a couple of years back and used it intensively for a year. It never broke down. It has cyanogen operating system and it also has android 5.1.1 version. It has 8 megapixels back camera but when you click an image the sharpness of this image was fabulous even a image clicked with 13 megapilex camera can not compete with the image clicked by this phone. It has gorilla glass display which is very strong and scratch proof. This phone supports dual 4g micro sim cards but after using this phone for 1 hour the phone heats like an microwave