This is a mobile phone user manual, which mainly introduces the appearance, key instructions, interface icons, earphones, battery disassembly, battery charging, SIM card installation, memory card installation, resource management, power on and off, dialing, answering, rejecting calls, text input, using menus, menu functions, phone book, message center, call records, settings, multimedia, file management, network camera, entertainment and games, scenario mode, toolbox, network services, additional functions, battery information and other contents.