Do you have a question about the Concox GS503 and is the answer not in the manual?
Defines the primary dial, confirmation, and navigation keys for menu and phone book interaction.
Details the operation of power, SOS, FM radio, torch, keypad lock, and hands-free keys.
Explains the usage of special input keys like '*' and '#' and the tone adjustment key.
Guides on installing the SIM card and battery to prepare the phone for use.
Covers the torch, keypad lock, and the main functional menu access.
Details on managing contacts, adding new contacts, and setting up SOS numbers and modes.
Explains SOS call settings, tone, repeat times, and configuring fast-dial numbers.
Covers message management, saving messages, and viewing/deleting call logs.
Details on date/time, language, input methods, backlight, contrast, sounds, and alerts.
Instructions for turning the FM radio on/off and tuning channels.
Details on using SMS commands for monitoring and setting up familiarity numbers.
Explains how to initiate an emergency call, including GPS activation and message sending.
Describes methods to start GPS and check the device's location via platform or SMS.
Explains how the phone sends location data to the platform and reasons for disconnection.
Details on receiving service information and managing SMS when the inbox is full.