The G20 offers voice communication through CSFB, VoLTE, and VoIP, with dual-band WiFi (2.4/5G) and 100M LAN. It features a TFT 800*480 color touchscreen, customized Android 7.1+ system supporting video, LTE FDD/TDD, WCDMA/CDMA2000, and GSM quad bands. It includes a WiFi hotspot and LAN port, 3.5mm earphone port, Bluetooth, inbuilt battery, FoTA, and USB OTG port supporting camera and keypad. The simple web tool manages phonebook sync, messages, call logs, and remote configuration. The far-field speaker phone reaches 5-6 meters, ideal for hands-free use or small-scale conferences.