No SIM card, or charging in progress
Not registered, and searching network (SIM card and Wi-Fi are detected)
Charging finished, or signals being received or transmitted
Registered successfully and in standby mode
Individual call being made or received, or the account not deployed in the
platform
3 Circuit Description
3.1 Circuit Diagram
The radio is composed of these function modules: a LCD module, a key detector module, an audio power amplifier, an NFC
module, a SIM card module, a USB storage module, a Wi-Fi module, a GPS module and a BT module.