The G4 is a versatile communication device supporting voice via CSFB and VoLTE, with dual-band WiFi 2.4/5G. It features a 2.4" TFT 320*240 color screen and runs on a customized Android 8.1+ system, supporting video. The G4 supports LTE FDD/TDD, WCDMA, and GSM quad bands, and includes a WiFi hotspot. Key features are a 3.5mm earphone port, Bluetooth, inbuilt battery, and FoTA. The simple web tool manages phonebook sync, messages, call logs, and remote configuration. Optional features include a back slip, vibrator, and changeable battery.