System Configuration Processor Octa-core 2.0 GHz Operating system Android 9.0 Memory (ROM+RAM) 16GB+2GB SIM Single SIM card Expansion slot Micro SD card, up to 256 GB Display screen 4.7-inch, resolution: 1280*720 pixel Touch screen Industrial capacitive screen, supporting two-point touch + gesture operation Camera 8 MP autofocus camera in the back side (13 MP optional), LED flash Flashlight 800mA flashlight Keyboard 9 keys in total, front key*4, side scan*2, side custom key*2, side power key*1 Battery Lithium battery 3.85V, 4000mAh, removable *Executive standard: GB31241-2014 Audio Built-in microphone Charging Type-C charging and pin port charging, 18W fast charging Prompts Vibration reminder/LED reminder/audio reminder Vibrating motor Built-in vibrating motor Sensor Gravity sensor (G-sensor) Intercom function (optional) Supporting one-button PTT calls