AllCall Atom 2.5D Curved Screen Dual Rear Cams Android 7.0 Quad Core Mobile Phone BlackKey Features...3G, 4G, Alarm, Bluetooth, Browser, Calculator, Calendar, Camera, E-book, FM, GPS, Gravity Sensing System, Light Sensing System, MP3, MP4, Notification, People, Proximity Sensing, WiFi.5.2 inch screen, almost the gold size of the phone. More convenient hand operating compared to 5.5 big size. But i..