Mate9 is very good. You can go to the experience store or official website to check the parameter information: 1. System: Mate9 is based on Android 7.0 system, equipped with Huawei EMUI 5.0 operating system, and has a higher Kirin 960, eight nuclear+Wei Zhi Core I6 processor; 2. On the screen: the screen size is 5.9 inches, the screen color is16.7 million colors, and the color saturation (NTSC) is 96% (typ. ). It is more cool to play games and watch videos on a large screen; 3. Memory: 4G running memory, 66G storage space and 128G, supporting 256G expansion, OTG function, large memory, faster and smoother operation; 4. Camera: Mate9 rear camera, equipped with 20 million black and white+12 million color, F2.2 aperture, Leica certified lens, supporting OIS optical image stabilization. The maximum photo resolution supports 5 120*3840, and the photos are clearer. Front camera 8 million, aperture F 1.9, more automatic focusing and self-timer. 5, on the battery: the mobile phone has a built-in 4000mAh battery, which supports Huawei's super fast charging, system optimization, lower power consumption and more durable battery; 6. On the network: support 1334 operators and 2 17 countries/regions to roam easily, and the secondary card also supports GSM/CDMA/WCDMA;